Is PICO_NO_FLASH supported?

Hello! Is there a way to upload firmware to the RAM of the MBED device (Raspberry Pico in my case) instead of the flash memory? This is useful during development to reduce the wear of the flash memory. Using the Pico SDK, this can be achieved with the PICO_NO_FLASH flag, but I have no idea how/where to set this flag when using the Arduino Core (in PlatformIO in my case).
Best regards,
Joerg

The issue names the PICO_NO_FLASH flag, Arduino Core for mbed, Raspberry Pico, and PlatformIO, but no source file or test. Start by checking how PlatformIO passes build flags to the Arduino Core and whether this flag is supported; done means establishing whether RAM-only uploads are possible and documenting the required configuration or limitation.

Written by the indexing model from the issue text.