fix(webhook): prevent tag events from bypassing branch filters targets #35449 (#35567)

Tag creation/deletion was triggering push webhooks even when branch
filters were configured, causing unintended pipeline executions.

This change modifies the branch filter logic to check the full ref
name directly instead of first determining if it's a "branch" event.

Fixes: Tag events now properly respect branch filters
- Add getPayloadRef() function to extract full ref names
- Update PrepareWebhook() to use direct ref matching
- Prevents refs/tags/* from matching refs/heads/* filters

Closes #35449

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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: silverwind <me@silverwind.io>

options/locale/locale_en-US.ini

@@ -2434,7 +2434,9 @@ settings.event_workflow_job_desc = Gitea Actions Workflow job queued, waiting, i
 settings.event_package = Package
 settings.event_package_desc = Package created or deleted in a repository.
 settings.branch_filter = Branch filter
-settings.branch_filter_desc = Branch whitelist for push, branch creation and branch deletion events, specified as glob pattern. If empty or <code>*</code>, events for all branches are reported. See <a href="%[1]s">%[2]s</a> documentation for syntax. Examples: <code>master</code>, <code>{master,release*}</code>.
+settings.branch_filter_desc_1 = Branch (and ref name) allowlist for push, branch creation and branch deletion events, specified as glob pattern. If empty or <code>*</code>, events for all branches and tags are reported.
+settings.branch_filter_desc_2 = Use <code>refs/heads/</code> or <code>refs/tags/</code> prefix to match full ref names.
+settings.branch_filter_desc_doc = See <a href="%[1]s">%[2]s</a> documentation for syntax.
 settings.authorization_header = Authorization Header
 settings.authorization_header_desc = Will be included as authorization header for requests when present. Examples: %s.
 settings.active = Active