Fix: ctx.set_fonts() Doesn't Apply Fonts with Same Name

[rustbasic]

Fix: ctx.set_fonts() Doesn't Apply Fonts with Same Name

If a font file named my_font is set using ctx.set_fonts() and then another font file with the same name is set again using ctx.set_fonts(), it won't be applied.

1. Additionally, it's recommended to apply fonts immediately using ctx.set_fonts().
2. This will also allow to reset the fonts and texture.

• Related Automatically load system fonts when needed #5233
• Closes ctx.set_fonts() Doesn't Apply Fonts with Same Name #5252
• Related Fix: ctx.set_fonts() Doesn't Apply Fonts with Same Name #5253
• Related Context::add_font #5228
• Related Put font data into Arc to reduce memory consumption #5276

[github-actions]

Preview available at https://egui-pr-preview.github.io/pr/5345-patch146
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