fix: reinitialize CopilotSession on model reload #351

Job	Run time
Unit Tests	1m 11s
Security Audit	3m 6s
Lint	47s
Check (aarch64-unknown-linux-gnu, web-tools)	4m 11s
Check (x86_64-apple-darwin, default)	2m 48s
Check (aarch64-apple-darwin, default)	2m 29s
Check (x86_64-unknown-linux-gnu, no-default)	2m 52s
Check (x86_64-pc-windows-msvc, no-default)	11m 7s
Check (x86_64-unknown-linux-gnu, full)	3m 36s
Check (aarch64-unknown-linux-gnu, no-default)	4m 3s
Check (x86_64-pc-windows-msvc, default)	11m 46s
Check (x86_64-unknown-linux-gnu, default)	2m 52s
Check (armv7-unknown-linux-gnueabihf, no-default)	3m 44s
Integration Tests	0s
E2E Tests	0s
Build (${{ matrix.target }})	0s
	54m 32s

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