IDEA-250748 [git] Git merge dialog: re-select field text after options update

GitOrigin-RevId: f7aff7507701e8202789ad6c7d6e88acbd2d41f3

plugins/git4idea/src/git4idea/merge/GitMergeDialog.kt

@@ -240,6 +240,7 @@ class GitMergeDialog(private val project: Project,
     }
 
     branchField.item = branchToSelect
+    branchField.selectAll()
   }
 
   private fun splitAndSortBranches(branches: List<@NlsSafe String>): List<@NlsSafe String> {

plugins/git4idea/src/git4idea/ui/ComboBoxWithAutoCompletion.kt

@@ -76,6 +76,10 @@ class ComboBoxWithAutoCompletion<E>(model: ComboBoxModel<E>,
     }
   }
 
+  fun selectAll() {
+    myEditableComponent?.selectAll()
+  }
+
   private fun initEditor() {
     val editableComponent = createEditableComponent()