Editor GPU: Reuse the atlas glyph storage buffer values instead of reallocating whenever the atlas changes

https://github.com/microsoft/vscode/blob/bd21f3c8f268b741edac137fc109d75a555c0541/src/vs/editor/browser/viewParts/linesGpu/viewLinesGpu.ts#L290-L292

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	// TODO: Reuse buffer instead of reconstructing each time
	// TODO: Dynamically set buffer size
	const values = new Float32Array(GlyphStorageBufferInfo.FloatsPerEntry * TextureAtlasPage.maximumGlyphCount);