Remove block from tunnel to Pink Brinstar Save Room, when entering the room from the Save Room. This will resolve a soft-lock scenario without any invasive changes to level layout & has no effect on item requirements (other than removing the need to not run out of Power Bombs).
Image of location is available here: https://discord.com/channels/567470487483973652/638112063780159499/792649643421990923
Edit: or change the block to a Shot Block.