Changing texture width height on Line2D with tiled texture doesn't update properly automatically

### Tested versions

Reproducible in:
v4.2.2.stable.official [15073afe3]
v4.3.stable.official.77dcf97d8
v4.4.dev5.official.9e6098432

### System information

MX Linux 23.3, 6.1.0-11-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.38-4 (2023-08-08) x86_64 GNU/Linux, OpenGL API 3.3.0 NVIDIA 535.183.01 - Compatibility - Using Device: NVIDIA - NVIDIA GeForce RTX 3060 Ti

### Issue description

Here is a view of the Line2D with a tiled texture.

Here I change height from 512 to 256. While the texture update, it doesn't properly reflect how it should be textured.

After toggling visibility, texture updates properly.

Changing texture size should trigger similar updates as toggling visibility (or changing width of line) --> this also causes proper update of texture.

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Also see my document feedback where I encountered this: https://github.com/godotengine/godot-docs/issues/10297

### Steps to reproduce

Described above.

### Minimal reproduction project (MRP)

[mrp-line2d-tiledtexture-texturesizechanged.zip](https://github.com/user-attachments/files/17867316/mrp-line2d-tiledtexture-texturesizechanged.zip)

Start with the attached minimal reproduction project and reproduce the Line2D tiled-texture behavior when changing texture height or width. Trace the update path triggered by texture-size changes and compare it with visibility or line-width changes; done means the texture refreshes correctly without requiring either workaround.

Written by the indexing model from the issue text.