[CBW-1040] fixed UI styling issues and small bugs for SendTokenActivity.

[czerwix]

Changes

fixed UI styling issues and small bugs for SendTokenActivity.

Checklist

• [x] My code follows the style of this project.
• [x] The code compiles without warnings.
• [x] I have performed a self-review of the changes.
• [x] I have documented my code, in particular the intent of the hard-to-understand areas.
• [x] (If necessary) I have updated the CHANGELOG.

CLA acceptance

_Remove if not applicable.

By submitting the contribution I accept the terms and conditions of the Contributor License Agreement v1.0

• link: https://developers.concordium.com/CLAs/Contributor-License-Agreement-v1.0.pdf

• [x] I accept the above linked CLA.

[github-actions[bot]]

File	Coverage [0%]	:x:
SendTokenActivity.kt	0%	:x:
SendTokenViewModel.kt	0%	:x:

Total Project Coverage	0.95%	:x:

[github-actions[bot]]

File	Coverage [0%]	:x:
SendTokenActivity.kt	0%	:x:
SendTokenViewModel.kt	0%	:x:

Total Project Coverage	0.95%	:x: