[Android] Verify and fix course level empty states

[moiz994]

We need to verify and fix empty states of the major modules within the course experience.

Case 1: Empty state for handouts
If there are no handouts in the course we need to show a screen letting the users know of this instead of showing an empty area under the pill navigation.

Icon to be used: https://www.figma.com/design/iZ56YMjbRMShCCDxqrqRrR/Open-edX-Mobile-App-All-Screens-v2.1?node-id=7569-52011&t=WPTCJ4I9SHy0sBji-4

Copy to be used: There are currently no handouts for this course.

Case 2: Empty Screen for announcements
Icon to be used: https://www.figma.com/design/iZ56YMjbRMShCCDxqrqRrR/Open-edX-Mobile-App-All-Screens-v2.1?node-id=12519-78253&t=WPTCJ4I9SHy0sBji-4

Copy to be used: There are currently no announcements for this course.

Case 3: Empty screen for videos
Icon to be used: https://www.figma.com/design/iZ56YMjbRMShCCDxqrqRrR/Open-edX-Mobile-App-All-Screens-v2.1?node-id=14629-260626&t=WPTCJ4I9SHy0sBji-4

Copy to be used: There are currently no vidoes for this course.

[moiz994]

Updated icons present in the iOS ticket: openedx/openedx-app-ios#454