Hotline international number (EXPOSUREAPP-6011) (#2789)

* Added hotline number to TAN and Tech hotline screens.

* Fix detekt

* Removed test for "Call" button press since there's no more call button.

* Added spacing between international number and next text line.

* Updated strings and text size.

* Changed TAN button to blue.

* Removed blank line.

Co-authored-by: Lukas Lechner <lukas.lechner@sap.com>
Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>
Co-authored-by: I502720 <axel.herbstreith@sap.com>