fix(revenuecat): clear extendByDays default when expiryTimeMs is provided

Mirror the duration/endTimeMs fix from 8204e89: when expiryTimeMs is
populated, clear extendByDays in the params mapper so the empty-string
form value does not trip the XOR guard. Also harden the tool-level XOR
checks in defer_google_subscription and grant_entitlement to treat empty
strings as undefined for direct (non-block) callers.

Author: waleedlatif1

apps/sim/blocks/blocks/revenuecat.ts

@@ -403,6 +403,7 @@ Return ONLY the numeric timestamp, no text.`,
         }
         if (params.expiryTimeMs !== undefined && params.expiryTimeMs !== '') {
           next.expiryTimeMs = Number(params.expiryTimeMs)
+          next.extendByDays = undefined
         }
         if (params.introductoryPrice !== undefined && params.introductoryPrice !== '') {
           next.introductoryPrice = Number(params.introductoryPrice)

apps/sim/tools/revenuecat/defer_google_subscription.ts

@@ -65,8 +65,8 @@ export const revenuecatDeferGoogleSubscriptionTool: ToolConfig<
       'Content-Type': 'application/json',
     }),
     body: (params) => {
-      const hasExtend = params.extendByDays !== undefined
-      const hasExpiry = params.expiryTimeMs !== undefined
+      const hasExtend = params.extendByDays !== undefined && (params.extendByDays as unknown) !== ''
+      const hasExpiry = params.expiryTimeMs !== undefined && (params.expiryTimeMs as unknown) !== ''
       if (!hasExtend && !hasExpiry) {
         throw new Error('Provide either extendByDays or expiryTimeMs to defer a subscription')
       }

apps/sim/tools/revenuecat/grant_entitlement.ts

@@ -67,16 +67,20 @@ export const revenuecatGrantEntitlementTool: ToolConfig<
       'Content-Type': 'application/json',
     }),
     body: (params) => {
-      if (!params.duration && params.endTimeMs === undefined) {
+      const hasEnd = params.endTimeMs !== undefined && (params.endTimeMs as unknown) !== ''
+      const hasDuration = Boolean(params.duration)
+      if (!hasDuration && !hasEnd) {
         throw new Error('Provide either duration or endTimeMs to grant a promotional entitlement')
       }
-      if (params.duration && params.endTimeMs !== undefined) {
+      if (hasDuration && hasEnd) {
         throw new Error('Provide only one of duration or endTimeMs — they cannot be used together')
       }
       const body: Record<string, unknown> = {}
-      if (params.endTimeMs !== undefined) body.end_time_ms = params.endTimeMs
-      else if (params.duration) body.duration = params.duration
-      if (params.startTimeMs !== undefined) body.start_time_ms = params.startTimeMs
+      if (hasEnd) body.end_time_ms = params.endTimeMs
+      else if (hasDuration) body.duration = params.duration
+      if (params.startTimeMs !== undefined && (params.startTimeMs as unknown) !== '') {
+        body.start_time_ms = params.startTimeMs
+      }
       return body
     },
   },