fix(FieldColour): Fix type of FieldColour.prototype.isFullBlockField

Method on superclass became public in v12.0.0.

Author: cpcallen

plugins/field-colour/package.json

@@ -48,7 +48,7 @@
     "typescript": "^5.4.5"
   },
   "peerDependencies": {
-    "blockly": "^11.0.0"
+    "blockly": "^12.0.0"
   },
   "publishConfig": {
     "access": "public",

plugins/field-colour/src/field_colour.ts

@@ -209,7 +209,7 @@ export class FieldColour extends Blockly.Field<string> {
    *
    * @returns True if this field should take up the full block. False otherwise.
    */
-  protected isFullBlockField(): boolean {
+  override isFullBlockField(): boolean {
     const block = this.getSourceBlock();
     if (!block) throw new Blockly.UnattachedFieldError();