Fix some ui issues in prompting audio download

[ahmedre]

This patch fixes some ui issues in the prompting audio bar. It ensures
that the x is present, and makes the font a bit smaller to work better
on smaller screens.

Refs #3042.

[github-actions]

OLD: app-madani-debug.apk (signature: V1, V2)
NEW: app-madani-debug.apk (signature: V1, V2)

          │           compressed           │           uncompressed           
          ├───────────┬───────────┬────────┼───────────┬───────────┬──────────
 APK      │ old       │ new       │ diff   │ old       │ new       │ diff     
──────────┼───────────┼───────────┼────────┼───────────┼───────────┼──────────
      dex │  24.1 MiB │  24.1 MiB │ +491 B │  74.8 MiB │  74.8 MiB │ +1.2 KiB 
     arsc │   2.7 MiB │   2.7 MiB │    0 B │   2.7 MiB │   2.7 MiB │      0 B 
 manifest │   5.8 KiB │   5.8 KiB │    0 B │    28 KiB │    28 KiB │      0 B 
      res │   1.7 MiB │   1.7 MiB │   -6 B │     2 MiB │     2 MiB │      0 B 
   native │  18.8 KiB │  18.8 KiB │    0 B │  36.5 KiB │  36.5 KiB │      0 B 
    asset │ 404.2 KiB │ 404.2 KiB │    0 B │ 678.6 KiB │ 678.6 KiB │      0 B 
    other │ 218.3 KiB │ 218.3 KiB │   -3 B │ 464.6 KiB │ 464.6 KiB │      0 B 
──────────┼───────────┼───────────┼────────┼───────────┼───────────┼──────────
    total │  29.2 MiB │  29.2 MiB │ +482 B │  80.6 MiB │  80.6 MiB │ +1.2 KiB