Clear CodeQL note alerts (ASI + unused local)

- DOMObserver: add missing semicolon after forEach call (js/automatic-semicolon-insertion).
- defineGetterDetector: drop unused `const value` assignment; use `void` to keep the getter-triggering property access as a pure side effect (js/unused-local-variable).

Author: Isonimus

src/utils/DOMObserver.ts

@@ -103,7 +103,7 @@ export class DomObserver {
                     if (child instanceof HTMLElement) {
                       addedElements.push(child);
                     }
-                  })
+                  });
                 }
 
                 if (this.options.debugMode) {

src/utils/detectors/defineGetterDetector.ts

@@ -169,9 +169,8 @@ export class DefineGetterDetector extends AbstractDevToolsDetector {
         configurable: true,
       })
 
-      // Access the property to see if the getter works
-      // eslint-disable-next-line @typescript-eslint/no-unused-vars
-      const value = (testDiv as unknown as { testProp: string }).testProp
+      // Access the property to trigger the getter (side effect only).
+      void (testDiv as unknown as { testProp: string }).testProp;
 
       return testValue
       // eslint-disable-next-line @typescript-eslint/no-unused-vars