Fix toolkit connection dropdown hiding when panel is small (#4933)

Author: samgst-amazon

.changes/next-release/bugfix-d171c0a8-83d8-4dab-8499-d402939d7c38.json

@@ -0,0 +1,4 @@
+{
+  "type" : "bugfix",
+  "description" : "Fix toolkit connection dropdown getting hidden when panel width is small."
+}

plugins/toolkit/jetbrains-core/src-233/software/aws/toolkits/jetbrains/core/explorer/ActionToolbarLayoutUtil.kt

@@ -0,0 +1,9 @@
+// Copyright 2024 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+package software.aws.toolkits.jetbrains.core.explorer
+
+import com.intellij.openapi.actionSystem.ActionToolbar
+
+fun setToolbarLayout(toolbar: ActionToolbar) {
+    toolbar.layoutPolicy = ActionToolbar.NOWRAP_LAYOUT_POLICY
+}

plugins/toolkit/jetbrains-core/src-241+/software/aws/toolkits/jetbrains/core/explorer/ActionToolbarLayoutUtil.kt

@@ -0,0 +1,10 @@
+// Copyright 2024 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+package software.aws.toolkits.jetbrains.core.explorer
+
+import com.intellij.openapi.actionSystem.ActionToolbar
+import com.intellij.openapi.actionSystem.toolbarLayout.ToolbarLayoutStrategy
+
+fun setToolbarLayout(toolbar: ActionToolbar) {
+    toolbar.layoutStrategy = ToolbarLayoutStrategy.NOWRAP_STRATEGY
+}

plugins/toolkit/jetbrains-core/src/software/aws/toolkits/jetbrains/core/explorer/AwsToolkitExplorerToolWindow.kt

@@ -6,7 +6,6 @@ package software.aws.toolkits.jetbrains.core.explorer
 import com.intellij.icons.AllIcons
 import com.intellij.openapi.actionSystem.ActionManager
 import com.intellij.openapi.actionSystem.ActionPlaces
-import com.intellij.openapi.actionSystem.ActionToolbar
 import com.intellij.openapi.actionSystem.AnAction
 import com.intellij.openapi.actionSystem.AnActionEvent
 import com.intellij.openapi.actionSystem.DefaultActionGroup
@@ -65,12 +64,11 @@ class AwsToolkitExplorerToolWindow(
             val group = CredsComboBoxActionGroup(project)
 
             toolbar = BorderLayoutPanel().apply {
-                addToCenter(
-                    ActionManager.getInstance().createActionToolbar(ActionPlaces.TOOLBAR, group, true).apply {
-                        layoutPolicy = ActionToolbar.AUTO_LAYOUT_POLICY
-                        setTargetComponent(this@AwsToolkitExplorerToolWindow)
-                    }.component
-                )
+                val actionToolbar = ActionManager.getInstance().createActionToolbar(ActionPlaces.TOOLBAR, group, true).apply {
+                    setTargetComponent(this@AwsToolkitExplorerToolWindow)
+                }
+                setToolbarLayout(actionToolbar)
+                addToCenter(actionToolbar.component)
 
                 val actionManager = ActionManager.getInstance()
                 val rightActionGroup = DefaultActionGroup(