Reproduction steps:
1. Open the attached “BugRepro” project
2. Open the “Assets/Scenes/SampleScene.unity“ Scene
3. Enter the Play Mode
4. Observe the Game view

Expected result: Lights are not flickering
Actual result: Lights are flickering

Reproducible with: 6000.0.45f1, 6000.0.55f1, 6000.1.15f1, 6000.2.0b11, 6000.3.0a4
Not reproducible with: 6000.0.44f1

Reproducible on: Windows 11
Not reproducible on: No other environment tested

Notes:

• Not reproducible with Forward or Forward+ rendering
• Not reproducible when shadows are disabled
• Reproducible with Point, Spot, and Directional lights
• Not reproducible when TAA is disabled
• Link to the discussions: https://discussions.unity.com/t/point-and-spot-lights-flickering-urp-deferred-taa/1672715