Add Playwright automation aids for disclaimer and modals

- Added `data-testid` attributes to key modals (Disclaimer, Login, Upload, Video, Profile, Lockdown) to facilitate reliable selection in Playwright tests.
- Updated `js/disclaimer.js` and `js/index.js` to respect a new `playwright-bypass-disclaimer` localStorage flag, allowing automated tests to skip the disclaimer modal entirely.

components/disclaimer.html

@@ -7,6 +7,7 @@
   aria-labelledby="disclaimerModalTitle"
   aria-describedby="disclaimerModalDescription"
   data-ds="new"
+  data-testid="disclaimer-modal"
 >
   <div class="bv-modal-backdrop" data-dismiss></div>
 
@@ -130,6 +131,7 @@
         id="acceptDisclaimer"
         class="modal-primary"
         type="button"
+        data-testid="disclaimer-accept-btn"
       >
         I Understand
       </button>

components/lockdown-modal.html

@@ -6,6 +6,7 @@
   aria-labelledby="lockdownModalTitle"
   aria-describedby="lockdownModalDescription"
   data-ds="new"
+  data-testid="lockdown-modal"
 >
   <div class="bv-modal-backdrop"></div>
 

components/login-modal.html

@@ -6,6 +6,7 @@
   aria-labelledby="loginModalTitle"
   aria-describedby="loginModalDescription"
   data-ds="new"
+  data-testid="login-modal"
 >
   <div class="bv-modal-backdrop" data-dismiss></div>
 

components/profile-modal.html

@@ -8,6 +8,7 @@
   tabindex="-1"
   data-ds="new"
   data-mobile-view="menu"
+  data-testid="profile-modal"
 >
   <div class="bv-modal-backdrop"></div>
 

components/upload-modal.html

@@ -7,6 +7,7 @@
   aria-labelledby="uploadModalTitle"
   aria-describedby="uploadModalDescription"
   data-ds="new"
+  data-testid="upload-modal"
 >
   <div class="bv-modal-backdrop" data-dismiss></div>
 

components/video-modal.html

@@ -6,6 +6,7 @@
   aria-modal="true"
   data-ds="new"
   hidden
+  data-testid="video-modal"
 >
   <div class="bv-modal-backdrop" data-dismiss></div>
   <div class="bv-modal__panel" tabindex="-1">