fix: persist rollType/actorId on rollBase.options, re-evaluate canReroll after mulligan

- roll-prompt.mjs: explicitly save rollType, actorId, actorName, actorImage
  to rollBase.options so mulligan reroll context reads valid values
- chat-reaction.mjs: replace canRerollDefense/canRerollAttack = false with
  recomputation from updated D30 message — aligns same-client with
  cross-client behavior (new D30 always takes effect, mulligan chain loops)

module/documents/roll-prompt.mjs

@@ -570,6 +570,10 @@ export async function prompt(options = {}) {
     rollBase.options.D30result = options.D30result
     rollBase.options.D30message = options.D30message
     rollBase.options.badResult = badResult
+    rollBase.options.rollType = options.rollType
+    rollBase.options.actorId = options.actorId
+    rollBase.options.actorName = options.actorName
+    rollBase.options.actorImage = options.actorImage
     rollBase.options.rollData = foundry.utils.duplicate(rollData)
     rollBase.options.defenderId = options.defenderId
     rollBase.options.defenderTokenId = options.defenderTokenId