RI-7637 Loading indicator for tables in Browser keys details

[valkirilov]

Description

Bring back the loading indicator for tables in Browser Keys details.

Screen.Recording.2025-10-23.at.14.10.20.mov

How it was tested

1. Go to Databases and open a connection to an existing database instance, or create a new one
2. Go to the Browser page
3. Open an existing key of type SET, SORTED SET, LIST, or HASH (all of which come with a table with members)
4. Click on the refresh button in the header of the Key Details panel

Note: Usually, the indicator is shown, but it disappears very quickly if your connection is fast enough. You can make it stay for longer if you throttle your internet connection via the Dev Tools -> Network -> Throttle

[github-actions]

Code Coverage - Frontend unit tests

St.❔	Category	Percentage	Covered / Total
🟢	Statements	82.18%	20127/24491
🟡	Branches	67.62%	8713/12886
🟡	Functions	76.27%	5350/7015
🟢	Lines	82.59%	19706/23859

Test suite run success

5226 tests passing in 681 suites.

Report generated by 🧪jest coverage report action from 17fac76

[pd-redis]

I don't like this name

[pd-redis]

maybe just absolute?!

[valkirilov]

Done, simplified.