repl: Rely on block decorations to size according to content (#15713)

We no longer have to use line height calculations now that
https://github.com/zed-industries/zed/pull/15536 is in. Blocks resize
according to their content. This fixes up some of the rendering issues
on plaintext outputs as well.

Release Notes:

- Fix repl plain text output wrapping around and covering editor text
(https://github.com/zed-industries/zed/issues/15491,
https://github.com/zed-industries/zed/issues/14855)

crates/repl/src/session.rs

@@ -2,7 +2,7 @@ use crate::components::KernelListItem;
 use crate::KernelStatus;
 use crate::{
     kernels::{Kernel, KernelSpecification, RunningKernel},
-    outputs::{ExecutionStatus, ExecutionView, LineHeight as _},
+    outputs::{ExecutionStatus, ExecutionView},
 };
 use client::telemetry::Telemetry;
 use collections::{HashMap, HashSet};
@@ -82,7 +82,8 @@ impl EditorBlock {
             let invalidation_anchor = buffer.read(cx).read(cx).anchor_before(next_row_start);
             let block = BlockProperties {
                 position: code_range.end,
-                height: (execution_view.num_lines(cx) + 1) as u32,
+                // Take up at least one height for status, allow the editor to determine the real height based on the content from render
+                height: 1,
                 style: BlockStyle::Sticky,
                 render: Self::create_output_area_renderer(execution_view.clone(), on_close.clone()),
                 disposition: BlockDisposition::Below,