Add dummy constraint to card view to fix Autolayout missing constraints (#8243)

* Add dummy constraint to card view to fix Autolayout missing constraints

* Update CHANGELOG

Author: christibbs

FirebaseInAppMessaging/CHANGELOG.md

@@ -1,3 +1,6 @@
+# 2021-6 -- v.8.2.0
+- [fixed] Fixed missing constraints warnings in default UI storyboard (#8205).
+
 # 2021-6 -- v.8.1.0
 - [fixed] Fixed bug where image-only messages had the wrong message type in message callbacks (#8081).
 

FirebaseInAppMessaging/iOS/Resources/FIRInAppMessageDisplayStoryboard.storyboard

@@ -563,6 +563,7 @@
                             <constraint firstItem="Aft-rr-icV" firstAttribute="centerY" secondItem="SM1-hn-m3n" secondAttribute="centerY" identifier="Center card view vertically" id="N6p-hW-l6v" userLabel="Center card view vertically"/>
                             <constraint firstItem="Aft-rr-icV" firstAttribute="leading" relation="greaterThanOrEqual" secondItem="SM1-hn-m3n" secondAttribute="leadingMargin" constant="10" identifier="Card view left padding of at least 10 in super view" id="UPX-5a-akO" userLabel="Card view left padding of at least 10 in super view"/>
                             <constraint firstItem="Aft-rr-icV" firstAttribute="leading" secondItem="SM1-hn-m3n" secondAttribute="leadingMargin" constant="20" identifier="Card view left padding of 20 in superview - landscape phone" id="f2U-O8-7pI" userLabel="Card view left padding of 20 in superview - landscape phone"/>
+                            <constraint firstItem="Aft-rr-icV" firstAttribute="top" secondItem="1Sy-cb-zoy" secondAttribute="bottom" constant="40" placeholder="YES" id="jMw-xm-KkF" userLabel="Card view top -- remove at build time"/>
                             <constraint firstItem="Aft-rr-icV" firstAttribute="top" relation="greaterThanOrEqual" secondItem="1Sy-cb-zoy" secondAttribute="bottom" constant="10" identifier="Card view top padding of at least 10 in super view" id="rYP-c9-NxX" userLabel="Card view top padding of at least 10 in super view"/>
                         </constraints>
                         <variation key="default">