Wrong include paths when using the external platform feature (CON-1607)

[sbh82]

When using the external platform feature, there are some wrong include directives that lookup to the default ESP32 platform and not to the custom external platform defined.
The wrong includes are in the following files:

components/esp_matter/esp_matter_core.cpp
components/esp_matter/esp_matter_ota.cpp
components/esp_matter/esp_matter_ota.h
components/esp_matter/esp_matter_providers.cpp
components/esp_matter_console/esp_matter_console.cpp
components/esp_matter_console/esp_matter_console_otcli.cpp
components/esp_matter_controller/core/esp_matter_controller_client.cpp

In all these files there is the static path #include <platform/ESP32/xxxxxx> but it's not correct when using the external platform.

In components/esp_matter/esp_matter_ota.h for example the include is:

#include <platform/ESP32/OTAImageProcessorImpl.h>

but the path platform/ESP32 should not be static but dynamic because I'm using the external platform where the platform path is different (platform/ESP32_custom in my case).
In this way it does not compile my custom code implementation but the default implementation defined in platform/ESP32.