Fixed Time Log validation to show all errors at once

[xrub1n]

Fix Time Log validation error handling to display all errors simultaneously

• Changed error accumulation from using React state during validation to using a local array
• Errors are now collected during the entire validation phase and set to state once at the end
• This fixes the bug where only one error appeared per submit click and errors would disappear mysteriously
• Errors now persist until the form is successfully submitted
• Removed premature setError1([]) call that was causing stale state references due to closure

Fixes: Time Log form showing errors one at a time instead of all at once