fix(ui5-tokenizer): improve layouting performance

[MapTo0]

FIXES: #12596

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[ui5-webcomponents-bot]

🧹 Preview deployment cleaned up: https://pr-12719--ui5-webcomponents.netlify.app

[MapTo0]

This change improves the layouting of Tokenizer.

Rendering 1000 tokens

Before

Opening Popover (~ 630 ms scripting, ~ 100 ms rendering)

Closing Popover (~ 1350 ms scripting, ~ 2 s rendering )

After

Opening Popover (~ 100 ms scripting, ~ 120 ms rendering)

Closing Popover (~ 100 ms scripting, ~ 100 ms rendering )

[ui5-webcomponents-bot]

🚀 Deployed on https://pr-12719--ui5-webcomponents-preview.netlify.app