Sets the cursor colour on the passcode screen to grey.

[dan0xii]

Before this change, if the user has a custom colour set on their
nextcloud server, the cursor would be blue regardless of the custom
theme colour.

Before the change:

After:

[nextcloud-android-bot]

Lint

Type	master	PR
Warnings	90	90
Errors

FindBugs (new)

Warning Type	Number
Bad practice Warnings	35
Correctness Warnings	162
Internationalization Warnings	15
Malicious code vulnerability Warnings	10
Multithreaded correctness Warnings	9
Performance Warnings	121
Security Warnings	204
Dodgy code Warnings	140
Total	696

FindBugs (master)

Warning Type	Number
Bad practice Warnings	35
Correctness Warnings	162
Internationalization Warnings	15
Malicious code vulnerability Warnings	10
Multithreaded correctness Warnings	9
Performance Warnings	121
Security Warnings	204
Dodgy code Warnings	140
Total	696

[AndyScherzinger]

👍 Nice catch @dan0xii

[tobiasKaminsky]

👍 Thank you very much for your contribution! 🎉