[INTERNAL][FIX] sap.m.SegmentedButton: Buttons width calculation fix
when size is in percent

- Buttons width calculation fix when size is in percent and center when
in bar element.
- Added unit tests for that scenario

Change-Id: Ic99eed3db08538229d2f57b885048f7fbfc0843c
[INTERNAL] Formatter precision and scale handling added

+ adding removeValidationError

Change-Id: I30bd62c10147949b6d0d9ddb4691f123f624a809
Merge "[INTERNAL] Formatter precision and scale handling added"
Merge "[INTERNAL][FIX] sap.m.SegmentedButton: Buttons width calculation fix when size is in percent"