Deprecate sorting vulnerabilities by title in GraphQL API

In order to improve performance and user experience of our vulnerability report pages,
the ability to sort vulnerabilities by title with the GraphQL API is being deprecated and removed

Changelog: deprecated
EE: true

doc/api/graphql/reference/index.md

@@ -15480,8 +15480,8 @@ Vulnerability sort values.
 | <a id="vulnerabilitysortseverity_desc"></a>`severity_desc` | Severity in descending order. |
 | <a id="vulnerabilitysortstate_asc"></a>`state_asc` | State in ascending order. |
 | <a id="vulnerabilitysortstate_desc"></a>`state_desc` | State in descending order. |
-| <a id="vulnerabilitysorttitle_asc"></a>`title_asc` | Title in ascending order. |
-| <a id="vulnerabilitysorttitle_desc"></a>`title_desc` | Title in descending order. |
+| <a id="vulnerabilitysorttitle_asc"></a>`title_asc` **{warning-solid}** | **Deprecated** in 14.2. Deprecated due to performance issues. |
+| <a id="vulnerabilitysorttitle_desc"></a>`title_desc` **{warning-solid}** | **Deprecated** in 14.2. Deprecated due to performance issues. |
 
 ### `VulnerabilityState`
 

ee/app/graphql/types/vulnerability_sort_enum.rb

@@ -7,8 +7,13 @@ module Types
 
     value 'severity_desc', 'Severity in descending order.'
     value 'severity_asc', 'Severity in ascending order.'
-    value 'title_desc', 'Title in descending order.'
-    value 'title_asc', 'Title in ascending order.'
+
+    value 'title_desc', 'Title in descending order.',
+          deprecated: { reason: 'Deprecated due to performance issues', milestone: '14.2' }
+
+    value 'title_asc', 'Title in ascending order.',
+          deprecated: { reason: 'Deprecated due to performance issues', milestone: '14.2' }
+
     value 'detected_desc', 'Detection timestamp in descending order.'
     value 'detected_asc', 'Detection timestamp in ascending order.'
     value 'report_type_desc', 'Report Type in descending order.'