TRY 2: MM-56201, MM-56280: Suppress typing and emoji events (#26282)

* Revert "Revert "MM-56201, MM-56280: Suppress typing and emoji events (#25794)…"

This reverts commit 6808a1c733.

* Remove bad ff merge

```release-note
NONE
```

server/public/model/feature_flags.go

@@ -50,6 +50,7 @@ type FeatureFlags struct {
 	ConsumePostHook  bool
 
 	CloudAnnualRenewals bool
+	WebSocketEventScope bool
 }
 
 func (f *FeatureFlags) SetDefaults() {
@@ -69,6 +70,7 @@ func (f *FeatureFlags) SetDefaults() {
 	f.CloudIPFiltering = false
 	f.ConsumePostHook = false
 	f.CloudAnnualRenewals = false
+	f.WebSocketEventScope = false
 }
 
 // ToMap returns the feature flags as a map[string]string