Rich Text Editor: Add emoji suggestion support (#30873)

* Add support for emoji suggestions

To both the rich text/plain text modes of the RTE.

* Add emoji completion test to WysiwygComposer

* Fix code as per test case, do no-op for community case

* bump wysiwyg to the version with suggestions supported.

* Add more unit tests for processTextReplacement

package.json

@@ -98,7 +98,7 @@
         "@types/png-chunks-extract": "^1.0.2",
         "@vector-im/compound-design-tokens": "^6.0.0",
         "@vector-im/compound-web": "^8.1.2",
-        "@vector-im/matrix-wysiwyg": "2.39.0",
+        "@vector-im/matrix-wysiwyg": "2.40.0",
         "@zxcvbn-ts/core": "^3.0.4",
         "@zxcvbn-ts/language-common": "^3.0.4",
         "@zxcvbn-ts/language-en": "^3.0.2",