Implemented on onEndEditing for TextInput component

[iamAbhi-916]

Description

Implemented on onEndEditing for TextInput component

Captures the final text when the input loses focus

input loses focus

• when clicked outside of the input
• when the return key is pressed

Type of Change

• New feature (non-breaking change which adds functionality)

Why

What is the motivation for this change? Add a few sentences describing the context and overall goals of the pull request's commits.
Fabric implementation of onEndEditing for TextInput component

Resolves [Add Relevant Issue Here]
#13126

What

What changes were made to the codebase to solve the bug, add the functionality, etc. that you specified above.

added new emitter for onEndEditing , when lost focus in component view this emitter is triggered .

Screenshots

Three scenarios

• when clicked outside of the input
• when the return key is pressed

onEndEditing.mp4

Testing

Tested using Sample/textInput

Changelog

yes

Add a brief summary of the change to use in the release notes for the next release.

[acoates-ms]

Why !m_comingFromJS?
I'm also not sure that we get onLostFocus from JS?

[iamAbhi-916]

correct JS does not directly call onLostFocus in native code , JS does not directly dispatch this event
but it can cause focus loss by calling .blur() on a TextInput thats where m_comingFromJS helps -> it prevents firing onEndEditing again when JS initiates focus loss.

[acoates-ms]

"when the keyboard is dismissed"
Strangely enough, dismissing the keyboard doesn't actually dire onEditEditing on android.
However, the code you have in the test page is calling Keyboard.dismiss(), which blurs the focus, so it basically just causes a focus lost. - But it isn't related to the keyboard being dismissed. (Tried in expo snack on android, dismissing the keyboard using the android "back" button does not cause onEditEditing to be hit.

That said, that aligns with what the PR here actually does. I'd probably remove the "when the keyboard is dismissed" from your PR description, and remove the keyboard touchable in the sample.