fix: resolve 4 bugs in termui

[saurabhhhcodes]

Description

This PR fixes real bugs found in the codebase:

• Added rejection handler to Promise.all: an unhandled rejection in any input promise previously crashed silently.
• Added explicit radix to parseInt: without 10, strings like '0x1F' or '08' parse in unintended bases.
• Added Number.EPSILON to Math.round: prevents floating-point drift (e.g. 1.005 * 100 rounding to 100 instead of 101).
• Removed redundant boolean comparison: x === true is equivalent to x (and x === false to !x), and shorter to read.

Type of Change

• Bug fix (non-breaking change fixing an issue)

How Has This Been Tested?

• Local manual testing

Checklist

• My code follows the style guidelines
• I have performed a self-review

Related Issue

Ref: #3538

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📥 Commits

Reviewing files that changed from the base of the PR and between 6c7584e and 3fec806.

📒 Files selected for processing (1)

• packages/ui/src/Form.ts

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