Bump version to 1.1.2 and update TaxonomyNavigationService to hide tags not available for tagging

- Updated TaxonomyNavigationService to set hideTagsNotAvailableForTagging to true.
- Modified getAllTerms call to include the updated parameter for hiding unavailable tags.
- Removed external CSS loading functionality from MegaMenuApplicationCustomizer.
- Updated cache prefixes in SPTermStorePickerService for versioning.
- Bumped version in package.json and package-lock.json to 1.1.2.
- Updated deployment manifest files to reflect the new version.

lib/extensions/megaMenu/MegaMenuApplicationCustomizer.d.ts

@@ -5,7 +5,6 @@ export interface IMegaMenuApplicationCustomizerProperties {
     termSetName?: string;
     termSetId?: string;
     cacheMinutes?: number;
-    cssUrl?: string;
     debug?: boolean;
 }
 export default class MegaMenuApplicationCustomizer extends BaseApplicationCustomizer<IMegaMenuApplicationCustomizerProperties> {
@@ -16,11 +15,9 @@ export default class MegaMenuApplicationCustomizer extends BaseApplicationCustom
     private _renderPlaceHolders();
     private _renderMegaMenu(termSetIdentifier, debug?);
     private _getOrCreateContainer(id, placeholder);
-    private _loadExternalCss(cssUrl?, debug?);
     private _onDispose;
     private _getTermSetIdentifier();
     private _getCacheMinutes();
-    private _validateCssUrl(cssUrl);
     private _renderStatus(message);
     private _isGuid(value);
     private _isDebugEnabled(debugOverride?);