util/log: add custom crash tags to sentry

In #106786 we added the ability to provide an environment
variable that was meant to add custom tags to sentry crash
reports. That change added the function that would create
the map of crash report tags / values, but it was never actually
used. This change ensures that tags from that environment
variable will actually show up in the sentry reports.

Release note: None

Epic: None

pkg/util/log/logcrash/crash_reporting.go

@@ -255,6 +255,7 @@ func SetupCrashReporter(ctx context.Context, cmd string) {
 	crashReportingActive = true
 
 	sentry.ConfigureScope(func(scope *sentry.Scope) {
+		scope.SetTags(getTagsFromEnvironment())
 		scope.SetTags(map[string]string{
 			"cmd":          cmd,
 			"platform":     info.Platform,