core: do not regenerate key when accepting connection to avoid invalidating invitation link on bad networks (#5018)

* core: prepare conn (plan)

* update

* group join

* comment

* comment

* wip

* Revert "wip"

This reverts commit 0849f43377.

* accept

* save contact_id, reuse contact

* refactor

* simplexmq

* set contactUsed

* support retrying join

* exclude prepared connections from API responses

* avoid race with events

* avoid race better

* fix UI

* update library

* tmp

* update

* display error details on ios cmd prohibited

* underscore instead of empty

* Update apps/ios/Shared/Model/SimpleXAPI.swift

Co-authored-by: spaced4ndy <8711996+spaced4ndy@users.noreply.github.com>

* test

* update simplexmq

---------

Co-authored-by: Evgeny Poberezkin <evgeny@poberezkin.com>
Co-authored-by: Diogo <diogofncunha@gmail.com>

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/model/ChatModel.kt

@@ -1889,6 +1889,7 @@ class PendingContactConnection(
 @Serializable
 enum class ConnStatus {
   @SerialName("new") New,
+  @SerialName("prepared") Prepared,
   @SerialName("joined") Joined,
   @SerialName("requested") Requested,
   @SerialName("accepted") Accepted,
@@ -1898,6 +1899,7 @@ enum class ConnStatus {
 
   val initiated: Boolean? get() = when (this) {
     New -> true
+    Prepared -> false
     Joined -> false
     Requested -> true
     Accepted -> true