Add missing plugins to issue templates (#365)

* Update issue template plugin options

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

* Use stable code apps issue label

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

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Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: priyanshu92

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -10,6 +10,8 @@ body:
       options:
         - canvas-apps
         - code-apps
+        - mcp-apps
+        - mobile-app
         - model-apps
         - power-automate
         - power-pages

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -10,6 +10,8 @@ body:
       options:
         - canvas-apps
         - code-apps
+        - mcp-apps
+        - mobile-app
         - model-apps
         - power-automate
         - power-pages