chore: fix unit tests

Author: markostanimirovic

modules/signals/rxjs-interop/spec/rx-method.spec.ts

@@ -378,8 +378,9 @@ describe('rxMethod', () => {
           adder(reactiveValue);
 
           expect(warnSpy).toHaveBeenCalled();
-          expect(warnSpy.mock.lastCall?.[0]).toMatch(
-            /outside the injection context/
+          const warning = (warnSpy.mock.lastCall || []).join(' ');
+          expect(warning).toMatch(
+            /reactive method was called outside the injection context with a signal or observable/
           );
         });
 

modules/signals/spec/signal-method.spec.ts

@@ -230,8 +230,9 @@ describe('signalMethod', () => {
       adder(n);
 
       expect(warnSpy).toHaveBeenCalled();
-      expect(warnSpy.mock.lastCall?.[0]).toMatch(
-        /outside the injection context/
+      const warning = (warnSpy.mock.lastCall || []).join(' ');
+      expect(warning).toMatch(
+        /function returned by signalMethod was called outside the injection context with a signal/
       );
     });