Run commands if completion items require so (#44008)

Abide the LSP better and actually run commands if completion items
request those:


https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#completionItem
```
/**
   * An optional command that is executed *after* inserting this completion.
   * *Note* that additional modifications to the current document should be
   * described with the additionalTextEdits-property.
   */
   command?: [Command](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#command);
```

Release Notes:

- N/A

crates/debugger_ui/src/session/running/console.rs

@@ -18,14 +18,14 @@ use gpui::{
 use language::{Anchor, Buffer, CharScopeContext, CodeLabel, TextBufferSnapshot, ToOffset};
 use menu::{Confirm, SelectNext, SelectPrevious};
 use project::{
-    Completion, CompletionDisplayOptions, CompletionResponse,
+    CompletionDisplayOptions, CompletionResponse,
     debugger::session::{CompletionsQuery, OutputToken, Session},
     lsp_store::CompletionDocumentation,
     search_history::{SearchHistory, SearchHistoryCursor},
 };
 use settings::Settings;
 use std::fmt::Write;
-use std::{cell::RefCell, ops::Range, rc::Rc, usize};
+use std::{ops::Range, rc::Rc, usize};
 use theme::{Theme, ThemeSettings};
 use ui::{ContextMenu, Divider, PopoverMenu, SplitButton, Tooltip, prelude::*};
 use util::ResultExt;
@@ -553,17 +553,6 @@ impl CompletionProvider for ConsoleQueryBarCompletionProvider {
         }
     }
 
-    fn apply_additional_edits_for_completion(
-        &self,
-        _buffer: Entity<Buffer>,
-        _completions: Rc<RefCell<Box<[Completion]>>>,
-        _completion_index: usize,
-        _push_to_history: bool,
-        _cx: &mut Context<Editor>,
-    ) -> gpui::Task<anyhow::Result<Option<language::Transaction>>> {
-        Task::ready(Ok(None))
-    }
-
     fn is_completion_trigger(
         &self,
         buffer: &Entity<Buffer>,