Retain scroll position after log level is changed

[orionlee]

Version: v1.2.3

Use case:
When users find an interesting log lines, by say, change the log level to ERROR, the users then want to view the surrounding logs at a more detailed level, e.g., VERBOSE.

Desired behavior:

• Users first put the log level to be more brief, e.g., ERROR
• Then scroll to find an interesting line, and tap the line .
• Users than change the log level to be more detailed, e.g., VERBOSE
• The app should keep the scroll position around the aforementioned line.

Current behavior:

• The app will move the scroll to the bottom once the log level is changed.