fix(amazonq): various fixes from mynah-ui (#5404)

- Fixing issue with an incorrect input cursor position in the prompt text box
- Showing/hiding the scrollbars is now controlled by the OS settings
- Fixing issue with the max tabs notification not being dismissible

Author: imykhai

package-lock.json

@@ -0,0 +1,4 @@
+{
+	"type": "Bug Fix",
+	"description": "Amazon Q Chat: Fixing issue with an incorrect input cursor position in the prompt text box"
+}

packages/amazonq/.changes/next-release/Bug Fix-1215af20-b5fb-451a-b118-deb6a462fb32.json

@@ -0,0 +1,4 @@
+{
+	"type": "Bug Fix",
+	"description": "Amazon Q Chat: Fixing issue with the max tabs notification not being dismissible."
+}

packages/amazonq/.changes/next-release/Bug Fix-4885c18d-bf4f-4b58-b318-407d1c2bcbec.json

@@ -0,0 +1,4 @@
+{
+	"type": "Bug Fix",
+	"description": "Amazon Q Chat: Showing/hiding the scrollbars is now controlled by the OS settings"
+}

packages/amazonq/.changes/next-release/Bug Fix-58eb1af1-78e7-44ba-b62f-7ebb6751f774.json

@@ -4111,7 +4111,7 @@
         "@aws-sdk/property-provider": "3.46.0",
         "@aws-sdk/smithy-client": "^3.46.0",
         "@aws-sdk/util-arn-parser": "^3.46.0",
-        "@aws/mynah-ui": "^4.15.2",
+        "@aws/mynah-ui": "^4.15.4",
         "@gerhobbelt/gitignore-parser": "^0.2.0-9",
         "@iarna/toml": "^2.2.5",
         "@smithy/middleware-retry": "^2.3.1",