fix(v2): add leading zero validation to decimal fields

[karrui]

Problem

Server validation will reject decimal fields with leading zeros. We should add client-side validation so users do not encounter cryptic submission errors.

Test cases

/^0[0-9]/.test('000') // true
/^0[0-9]/.test('00') // true
/^0[0-9]/.test('0') // false

/^0[0-9]/.test('001') // true
/^0[0-9]/.test('01') // true
/^0[0-9]/.test('1') // false

/^0[0-9]/.test('0010') // true
/^0[0-9]/.test('010') // true
/^0[0-9]/.test('10') // false

/^0[0-9]/.test('0.10') // false
/^0[0-9]/.test('0.010') // false
/^0[0-9]/.test('.10') // false
/^0[0-9]/.test('00.10') // true

Closes #4640

Solution

Breaking Changes

• No - this PR is backwards compatible

Bug Fixes:

• fix: add leading zero validation to decimal fields

Before & After Screenshots

Should have no change

[wanlingt]

lgtm

[timotheeg]

LGTM!