introduce red blinking icon instead of pulsing for TII recording

[andimik]

the red pulsing icon for TII recording is difficult to understand (too few contrast between the red tones) and was confusing even me some weeks ago.

Bildschirmaufzeichnung.vom.2026-07-07.08-17-08.mp4

Let's make it the same style like the audio recording which really blinks between grey and red.

Bildschirmaufzeichnung.vom.2026-07-07.08-16-37.mp4

[KejPi]

TII recording icon is aligned with audio recording icon in 4.3.0