sharing popup multiple issue fixes

[psawalka]

• Fixed 400 Bad Request errors when opening the Share Input popup.
• Fixed the continuous loading indicator in the sharing email input field.
• Fixed email sharing issues where recipients were not receiving emails for internal or Telekom mail shares.
• Fixed the Can't read properties of sharingpopup error when accessing the Quick Share options dropdown after creating a link share.
• Fixed the Manage Shares right-side panel displaying the standard Nextcloud share popup UI instead of the expected view.
• Fixed inconsistent error messages in the Android app v10.0.0 (dev1 environment) when entering easy-to-guess passwords in the Set Password field for email and link shares.