STM32G0B1- More FDCAN fixes and added a example #5172

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amken3d:dev-stm32g0b1-FDCANfixes

Commits on Jan 11, 2026

- **Fix CAN1 pin assignments on Nucleo-G0B1RE board.**
amken3d
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Commits on Jan 12, 2026

**Add comprehensive FDCAN test suite and configure interrupts on Nucleo-G0B1RE board.**
amken3d
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**Fix Standby pin configuration to handle uninitialized or zero-value pins in FDCAN setup.**
amken3d
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