Run into the room, and perform a very low short-hop mockball, delaying it so that Samus morphs right before the gate.

Entrance condition:

{
  "comeInRunning": {
    "speedBooster": true,
    "minTiles": 5
  }
}

Requires:

"canInsaneJump"
"canMockball"

Dev note: Theoretically this can be done with 4 tiles (technically even 3.4375 tiles) but would require higher movement tech.