Use a blue suit to shinespark out of the lava. A diagonal spark is slightly better though Samus will barely move horizontally.

Requires:

"canSuitlessLavaDive"
{
  "blueSuitShinecharge": {}
}
{
  "lavaFrames": 425
}
{
  "shinespark": {
    "frames": 27
  }
}
{
  "heatFrames": 590
}