fix: Simplified level assignment logic in BrowserConsole

[brawncode]

Description

I’ve updated the logic in the BrowserConsole function that handles the level property. Previously, there was a redundant check for opts in the conditional expression. Since we are already checking for the existence of opts?.level, it's unnecessary to verify opts again.

I’ve simplified the assignment to use the nullish coalescing operator (??), which directly assigns the value of opts.level if it exists, or defaults to "info" if it doesn't ;)

[CLAassistant]

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