linux: Fix non-maximized Zed windows growing larger across sessions (#22301)

Closes #17870

Context:

On Linux, when creating a new window, bounds are either pulled from
existing workspace data (serialized in an SQLite DB) or fall back to
some default constants if no data exists.

These bounds include the full dimensions of the window (width and
height), which already account for insets. However, properties like
`inset` (Wayland) or `last_insets` (X11) exist only at the platform
level and are not part of the window bounds themselves.

During rendering, we call `set_client_inset`, which updates the inset
values and also adjusts the window bounds, increasing their dimensions.
In Zed's case, the inset is 10px, which adds 20px to both the width and
height (10px from each side).

Problem:

When quitting, the full window bounds (which already account for inset)
are saved to the DB. On reopening, these saved bounds are used to create
the window. `set_client_inset` runs again and inflates the dimensions
even more.

Solution:

Store window bounds *without* the inset-inflated dimensions. On the next
session, `set_client_inset` will take care of applying the inset,
resulting window dimensions matching the previous session. This fix is
in the PR.

Alternative Solution:

Another option is to save the inset explicitly in the DB and apply it
during window creation. But this means storing more data, and the inset
would need to be platform-agnostic, which adds complexity. Doesn’t seem
worth it for no real gain.

X11 Before:
```sh
saving window bounds with width: 1136, height: 784
tims@lemon ~/w/zed (fix-window-growing-larger)> cargo run
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.37s
     Running `target/debug/zed`
saving window bounds with width: 1156, height: 804   <---- +20px
tims@lemon ~/w/zed (fix-window-growing-larger)> cargo run
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
     Running `target/debug/zed`
saving window bounds with width: 1176, height: 824  <---- +20px
tims@lemon ~/w/zed (fix-window-growing-larger)> cargo run
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
     Running `target/debug/zed`
saving window bounds with width: 1196, height: 844  <---- +20px
```

X11 After:
```sh
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
     Running `target/debug/zed`
saving window bounds with width: 1116, height: 764
tims@lemon ~/w/zed (fix-window-growing-larger)> cargo run
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
     Running `target/debug/zed`
saving window bounds with width: 1116, height: 764     <---- same
tims@lemon ~/w/zed (fix-window-growing-larger)> cargo run
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
     Running `target/debug/zed`
saving window bounds with width: 1116, height: 764   <---- same
```

On Wayland, saving occurs only when you actually resize the window (on
X11, saving happens both on init and while dragging the window). To
trigger saving, I manually resized the window by ~1px to make it print.

Wayland Before:
```sh
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 36s
     Running `target/debug/zed`
saving window bounds with width: 945, height: 577
tims@orange ~/zed (fix-window-growing-larger)> cargo run
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.77s
     Running `target/debug/zed`
saving window bounds with width: 966, height: 597    <--- +20px on both  (1px increase in width is me resizing)
tims@orange ~/zed (fix-window-growing-larger)> cargo run
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.87s
     Running `target/debug/zed`
saving window bounds with width: 987, height: 618    <--- +20px on both  (1px increase in width and height is me resizing)
tims@orange ~/zed (fix-window-growing-larger)> cargo run
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.89s
     Running `target/debug/zed`
saving window bounds with width: 1006, height: 638   <--- +20px on both  (1px decrease in width is me resizing)
```

Wayland After:
```sh
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.82s
     Running `target/debug/zed`
saving window bounds with width: 925, height: 558
tims@orange ~/zed (fix-window-growing-larger)> cargo run
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.84s
     Running `target/debug/zed`
saving window bounds with width: 925, height: 557     <--- same (1px decrease in height is me resizing)
saving window bounds with width: 925, height: 558
```

Release Notes:

- Fix non-maximized zed windows growing larger across sessions on Linux

---------

Co-authored-by: mgsloan@gmail.com <michael@zed.dev>

crates/workspace/src/workspace.rs

@@ -995,7 +995,7 @@ impl Workspace {
                     this.update(&mut cx, |this, cx| {
                         if let Some(display) = cx.display() {
                             if let Ok(display_uuid) = display.uuid() {
-                                let window_bounds = cx.window_bounds();
+                                let window_bounds = cx.inner_window_bounds();
                                 if let Some(database_id) = workspace_id {
                                     cx.background_executor()
                                         .spawn(DB.set_window_open_status(