Prevent redundant framebuffer attachment resizes and fix texture height check

[Gopmyc]

Description

This PR fixes unnecessary framebuffer attachment resize/reallocation work in the editor rendering path and corrects a texture resize comparison bug.

Changes:

• AView::Render now resizes the framebuffer only when viewport dimensions actually change.
• GLFramebuffer::Resize now early-returns when current and requested sizes match.
• GLRenderbuffer::Resize now early-returns when current and requested sizes match.
• GLTexture::Resize now compares p_height against desc.height (instead of desc.width).

This removes repeated steady-state resize churn and avoids false-positive texture reallocations.

Related Issue(s)

Fixes #792

Review Guidance

Please review commit-by-commit:

1. fix(rendering): avoid redundant framebuffer resize reallocations
2. fix(rendering): correct height comparison in texture resize

Screenshots/GIFs

N/A

AI Usage Disclosure

N/A

Checklist

• My code follows the project's code style guidelines
• When applicable, I have commented my code, particularly in hard-to-understand areas
• When applicable, I have updated the documentation accordingly
• My changes don't generate new warnings or errors
• I have reviewed and take responsibility for all code in this PR (including any AI-assisted contributions)

[adriengivry]

Only the changes in GLRenderBuffer.cpp and GLTexture.cpp should be kept