fix: add line break to gradle.properties for template testing

[hurali97]

Summary:

This fixes the failing CI jobs on main for template testing. The job fails as they echo react.internal.mavenLocalRepo=... to the gradle.properties of template test project. As a result of which the gradle.properties look like below:

android.builtInKotlin=false
android.newDsl=falsereact.internal.mavenLocalRepo=...

To fix it we add a line break in the echo command.

Changelog:

[INTERNAL] [FIXED] - add line break to gradle.properties for template testing

Test Plan:

• CI Passing
• Verified Locally

[hurali97]

cc: @cortinico - This fixes the failing CI jobs on main for template testing.

As an alternative, we can add a line break directly in the android/gradle.properties in community/template. Let me know what you prefer.

[meta-codesync]

@cipolleschi has imported this pull request. If you are a Meta employee, you can view this in D107880136.

[cortinico]

Review automatically exported from Phabricator review in Meta.

[react-native-bot]

This pull request was successfully merged by @hurali97 in b392035

^{When will my fix make it into a release? | How to file a pick request?}

[meta-codesync]

@cipolleschi merged this pull request in b392035.

[cortinico]

This did not work @hurali97

CI is still broken on main with:

* What went wrong:
A problem occurred evaluating project ':app'.
> Failed to apply plugin 'com.android.internal.application'.
   > Cannot parse project property android.newDsl='false
     react.internal.mavenLocalRepo=/tmp/react-native-tmp/maven-local' of type 'class java.lang.String' as boolean. Expected 'true' or 'false'.

[hurali97]

Strange, Let me take care of this tomorrow!

[hurali97]

Added here - #57114

Let's wait for the CI jobs to be finished, so we are sure this works 🙏