fix: Remove all unknown/invalid tags from Supabase CRE rules

COMPREHENSIVE TAG AUDIT & FIXES:
- CRE-2025-0133: 'cloud-provider-problem'  'infrastructure'
- CRE-2025-0135: removed 'database-problem' and 'syntax' tags
- CRE-2025-0132: removed 'database-problem' tag
- CRE-2025-0138: removed 'api-problem' and 'ddos' tags

All invalid tags replaced with existing valid tags from tags.yaml.
Tested locally with preq - all rules now pass validation successfully.
No more 'unknown tag' build failures.

Author: RaghavArora14

rules/cre-2025-0132/supabase-database-connection-timeout.yaml

@@ -26,7 +26,6 @@ rules:
         - connection
         - timeout
         - network
-        - database-problem
         - self-hosted
         - connectivity
         - public

rules/cre-2025-0133/supabase-storage-s3-misconfiguration.yaml

@@ -29,7 +29,7 @@ rules:
         - credentials
         - api-key
         - self-hosted
-        - cloud-provider-problem
+        - infrastructure
         - public
       mitigation: |
         IMMEDIATE:

rules/cre-2025-0135/supabase-migration-errors.yaml

@@ -27,8 +27,6 @@ rules:
         - migration-failure
         - sql
         - schema-error
-        - database-problem
-        - syntax
         - self-hosted
         - configuration
         - public

rules/cre-2025-0138/supabase-rate-limit-exceeded.yaml

@@ -23,12 +23,10 @@ rules:
       tags:
         - supabase
         - rate-limiting
-        - api-problem
         - throttling
         - kong
         - performance
         - self-hosted
-        - ddos
         - public
       mitigation: |
         IMMEDIATE: