Optimize render

[s-yadav]

• Optimize rendering, and avoid multiple rerender when number format is mounted.
• Try to guess valueIsNumericString based on props and value, so the user no longer has to define this prop, if the format prop (prefix, suffix, format) doesn't have the number in it.
• Fixes The focus timeout introduced in v5 makes the input difficult to test #736 - Fix for focus on mount getting reset.
• Fixed Error in type annotation of NumberFormatBaseProps (NumberFormatBase) #740 - fixed type for the format, removeFormat, getCaretBoundary.
• Fixed Thousand and decimal formatting broken while typing when valueIsNumericString is set to false with react-final-form #741 - Thousand and decimal formatting broken while typing when value isNumericString is set to false
• Fixed Cursor position resetting with a conditional prefix #742 - cursor position getting changed when format props are updated during typing.
• Fixed Using decimalSeparator with a suffix containing more than one character brakes the seperator behavior #725 - The cursor position not being correct when allowed decimal separator is typed
• Fixed a couple of false positive tests and some regressions around those.
• move caret position test to react/testing-util