Remove bootstrap classes from shared code (#12906)

Migrates the following components to not use bootstrap.

- apps/web/src/app/components/environment-selector/environment-selector.component.html
- apps/web/src/app/layouts/frontend-layout.component.html
- apps/web/src/app/layouts/org-switcher/org-switcher.component.html
- apps/web/src/app/settings/domain-rules.component.html
- bitwarden_license/bit-web/src/app/secrets-manager/projects/project/project-secrets.component.html
- bitwarden_license/bit-web/src/app/secrets-manager/settings/porting/sm-import.component.html

apps/web/src/app/settings/domain-rules.component.html

@@ -43,7 +43,7 @@
     <button type="submit" bitButton bitFormButton buttonType="primary">
       {{ "save" | i18n }}
     </button>
-    <h2 bitTypography="h2" class="spaced-header">{{ "globalEqDomains" | i18n }}</h2>
+    <h2 bitTypography="h2" class="tw-mt-16">{{ "globalEqDomains" | i18n }}</h2>
     <p bitTypography="body1" *ngIf="loading">
       <i
         class="bwi bwi-spinner bwi-spin tw-text-muted"