Update Substrate with Keyboard fixes for predictive text and non-predictive keyboard

[jperedadnr]

Follow up of #1350 and #1346

Progress

• Change must not contain extraneous whitespace
• License header year is updated, if required
• Verify the contributor has signed Gluon Individual Contributor License Agreement (CLA)

[Copilot]

Pull request overview

This PR updates the Android MainActivity IME integration to improve behavior when switching focus between JavaFX text controls and when using predictive vs non-predictive keyboards.

Changes:

• Forces InputMethodManager.restartInput(...) when showing the IME (and when the active JavaFX node id changes) to reset IME internal state.
• Tracks the active node id more defensively (volatile field, reset on hide) and binds an InputConnection to the node id at creation time.
• Adds an Android InputType mapping for a “no suggestions” keyboard type.

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