fix(matchers): fix broken matchers (jest and jasmine)

Matchers were broken by typescript upgrade:

As of TypeScript 5.5, the compiler no longer emits triple-slash directives to
the output files by default. However, there is a way to preserve these
directives in specific cases:

Use `preserve="true"` attribute in your triple-slash directive.

projects/spectator/jest/src/public_api.ts

@@ -1,5 +1,5 @@
 /// <reference types="jest" />
-/// <reference path="./lib/matchers-types.ts" />
+/// <reference path="./lib/matchers-types.ts" preserve="true" />
 export * from './lib/dom-selectors';
 export * from './lib/mock';
 export * from './lib/spectator';

projects/spectator/src/public_api.ts

@@ -1,4 +1,4 @@
-/// <reference path="./lib/matchers-types.ts" />
+/// <reference path="./lib/matchers-types.ts" preserve="true" />
 export { Spectator } from './lib/spectator/spectator';
 export { SpectatorOptions } from './lib/spectator/options';
 export { createComponentFactory, SpectatorFactory, SpectatorOverrides } from './lib/spectator/create-factory';