bv.arch.intrinsics locked to first seen architecture in tabs

[bloombit-dev]

Version and Platform (required):

• Binary Ninja Version: 5.4.10292-dev Ultimate
• OS: MacOS
• OS Version: 26.5.2
• CPU Architecture: M4 Max

bv.arch.intrinsics is locked to first seen architecture. Opening and switching to another tab with a different architecture binary view keeps the bv.arch.intrinsics from the first seen tab.

Steps To Reproduce:

1. Open binary view in UI with architecture A
2. Note the following in the built-in python interpreter:

>>> bv.arch
<arch: x86_64>
>>> len(bv.arch.intrinsics)
11930

3. Open another binary view in a different tab with architecture B
4. Note the following in the built-in python interpreter:

>>> bv.arch
<arch: x86_64>
>>> len(bv.arch.intrinsics)
11930

The above was repeated with x86, arm64 and hexagon combinations. Doesn't seem to be specific to an architecture.

Expected Behavior:
bv.arch.intrinsics is updated based on the binary view associated with the open tab.