lsp: Remove reinstall, update config (#18318)

Release Notes:

- Fixed overriding the path of a language server binary for all language
servers. `{"lsp":{"<lsp-name>":{"binary":{"path": "_"}}}}` will now work
for all language servers including those defined by extensions.
- (breaking change) To disable finding lsp adapters in your path, you
must now specify
`{"lsp":{"<lsp-name>":{"binary":{"ignore_system_version": true}}}}`.
Previously this was `{"lsp":{"<lsp-name>":{"binary":{"path_lookup":
false}}}}`. Note that this setting still does not apply to extensions.
- Removed automatic reinstallation of language servers. (It mostly
didn't work)

---------

Co-authored-by: Mikayla <mikayla@zed.dev>

crates/activity_indicator/src/activity_indicator.rs

@@ -299,7 +299,7 @@ impl ActivityIndicator {
                         .into_any_element(),
                 ),
                 message: format!(
-                    "Failed to download {}. Click to show error.",
+                    "Failed to run {}. Click to show error.",
                     failed
                         .iter()
                         .map(|name| name.0.as_ref())