Fix esp32-camera support after ESP-IDF v6 upgrade

[dhalbert]

• Fixes Memento camera init fails on latest builds #11031

Before ESP-IDF v6.0, the espcamera API shared the I2C bus that CircuitPython had already created, by passing its handle to esp-camera:

self->camera_config.sccb_i2c_master_bus_handle = self->i2c->handle;

The bus handle went away in recent version of esp32-camera, so the sharing needed to happen a different way. busio/I2C.c was changed to record the port of a created I2C object, and that port is now passed to esp32-camera:

self->camera_config.sccb_i2c_port = i2c->port;

Before this change, esp32-camera created a second I2C instance on the same pins, which caused the I2C device known to CircuitPython to be different from the one used by esp32-camera.

I also updated the esp32-camera submodule to v2.1.7 on the adafruit fork, merging in our changes. I removed some additions we had made because some equivalent changes were made upstream.

I tested on a Memento, which now works fine and takes pictures.

Claude Code helped with this diagnosis and fix. I thought it might be an issue with SCCB support due to I2C driver changes, but that was incorrect.