languages: Fix C/C++ outline for function definitions and declarations with mixed storage and type qualifiers (#47500)

Before:
<img width="1002" height="228" alt="before"
src="https://github.com/user-attachments/assets/94c5d0b7-a467-4bfe-8eaf-5a2c4b3cb7ea"
/>

After:
<img width="1002" height="228" alt="after"
src="https://github.com/user-attachments/assets/73d049d2-4dd1-40a4-ac21-984ca3fd32ee"
/>

Release Notes:

- Fixed C/C++ outline for function definitions and declarations with
mixed storage and type qualifiers.

crates/languages/src/cpp/outline.scm

@@ -60,7 +60,10 @@
     ] @item)
 
 (function_definition
-    (type_qualifier)? @context
+    [
+        (storage_class_specifier)
+        (type_qualifier)
+    ]* @context
     type: (_)? @context
     declarator: [
         (function_declarator
@@ -95,7 +98,10 @@
     (type_qualifier)? @context) @item
 
 (declaration
-    (type_qualifier)? @context
+    [
+        (storage_class_specifier)
+        (type_qualifier)
+    ]* @context
     type: (_)? @context
     declarator: [
         (field_identifier) @name