Issue loading plugin when multiple decompilers are installed.

[adityavardhanpadala]

Binary Ninja throws a binaryninja.UIPluginInHeadlessError: Cannot load binaryninjaui module from headless context.

https://github.com/Vector35/binaryninja-api/blob/6674992023316614773611132014859736534246/python/__init__.py#L472

when IDA is trying to load the plugin so just handling ImportError exceptions won't work in this case.

lighthouse/plugins/lighthouse/util/qt/shim.py

Line 42 in 562595b

except ImportError: