fix texture mip flicker on instanced meshes, by reporting screen size per pass and never reporting 0

[Ikreb1]

Fix texture-mip flicker on instanced meshes (PLAT-11597): report screen sizes per pass and never report 0. passes that culled a mesh were overwriting the frame's screen size, flapping the streamed mip at reflection-probe cadence.

[Copilot]

Pull request overview

Fixes texture-mip flicker on instanced meshes by ensuring texture LOD “usage” (screen size) is reported per render pass and that a screen size of 0 is never reported to materials (preventing spurious full-resolution mip requests when a pass culls a mesh).

Changes:

• Call EveInstancedMeshManager::ReportUsedScreenSizes() immediately after instanced batch gathering in the main scene gather and in the reflection pass.
• Update ReportUsedScreenSizes() to skip reporting when maxScreenSize is 0, and avoid unnecessary mesh LOD lookups in that case.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
trinity/Eve/EveSpaceScene.cpp	Reports instanced-mesh screen sizes right after batch generation for the primary gather and reflection pass, preventing later passes from affecting per-frame texture LOD requests.
trinity/Eve/EveInstancedMeshManager.cpp	Prevents reporting 0 screen sizes to materials and avoids extra work when nothing meaningful should be reported.

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