refactor(material/legacy-progress-spinner): rename ts symbols

Author: wagnermaciel

src/material/legacy-progress-spinner/public-api.ts

@@ -8,7 +8,7 @@
 
 import {MatLegacyProgressSpinner} from './progress-spinner';
 
-export * from './progress-spinner-module';
+export {MatLegacyProgressSpinnerModule} from './progress-spinner-module';
 export {
   MatLegacyProgressSpinner,
   MAT_LEGACY_PROGRESS_SPINNER_DEFAULT_OPTIONS,

src/material/legacy-progress-spinner/testing/public-api.ts

@@ -6,5 +6,5 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-export * from './progress-spinner-harness';
-export * from './progress-spinner-harness-filters';
+export {MatLegacyProgressSpinnerHarness} from './progress-spinner-harness';
+export {LegacyProgressSpinnerHarnessFilters} from './progress-spinner-harness-filters';