Can't register TriCore Architecture Hook at startup time

Version and Platform (required):
5.0.7204-dev ultimate

Bug Description:
Can't register TriCore Architecture Hook at startup time. (raises KeyError)

[ScriptingProvider] Traceback (most recent call last):
[ScriptingProvider]   File "/Users/d0now/Library/Application Support/Binary Ninja/plugins/tricore_ext/__init__.py", line 51, in <module>
[ScriptingProvider]     TriCoreExtHook.register(Architecture['tricore'])
[ScriptingProvider]   File "/Applications/Binary Ninja.app/Contents/MacOS/plugins/../../Resources/python/binaryninja/architecture.py", line 167, in __getitem__
[ScriptingProvider]     raise KeyError(f"'{name}' is not a valid architecture")
[ScriptingProvider] KeyError: "'tricore' is not a valid architecture"
[PythonPlugin] Python plugin 'tricore_ext' could not be loaded

Steps To Reproduce:

1. write architecture plugin: ($BINARYNINJA_HOME/plugins/tricorehook/__init__.py)

class TriCoreHook(ArchitectureHook):
    ...

TriCoreHook.register(Architecture['tricore'])

2. start binary ninja

Expected Behavior:
TriCoreHook should be registered at startup time.

Additional Information:
Workaround: d0now/binaryninja-tricore-ext

Start with the plugin entry point at $BINARYNINJA_HOME/plugins/tricorehook/init.py and the Architecture['tricore'] lookup shown in the traceback. Compare the workaround in d0now/binaryninja-tricore-ext, especially the linked registration section, and investigate startup ordering. Done means TriCoreHook registers during startup without the KeyError.