Bug 1949919 [wpt PR 50890] - Update wpt metadata, a=testonly

wpt-pr: 50890
wpt-type: metadata

UltraBlame original commit: 40ebb2b2c7753f5a3e6d5ac7a13a2b073fc204ee

Author: marco-c

testing/web-platform/meta/css/css-variables/variable-definition.html.ini

@@ -74,6 +74,7 @@ debug
 PASS
 FAIL
 ]
+FAIL
 [
 leading
 white
@@ -161,6 +162,7 @@ debug
 PASS
 FAIL
 ]
+FAIL
 [
 leading
 white
@@ -225,6 +227,7 @@ debug
 PASS
 FAIL
 ]
+FAIL
 [
 can
 overwrite
@@ -251,6 +254,7 @@ debug
 PASS
 FAIL
 ]
+FAIL
 [
 white
 space
@@ -283,6 +287,7 @@ debug
 PASS
 FAIL
 ]
+FAIL
 [
 can
 overwrite
@@ -313,6 +318,7 @@ debug
 PASS
 FAIL
 ]
+FAIL
 [
 leading
 white
@@ -373,6 +379,7 @@ debug
 PASS
 FAIL
 ]
+FAIL
 [
 white
 space
@@ -404,6 +411,7 @@ debug
 PASS
 FAIL
 ]
+FAIL
 [
 white
 space
@@ -435,6 +443,7 @@ debug
 PASS
 FAIL
 ]
+FAIL
 [
 leading
 white
@@ -654,3 +663,40 @@ Cascading
 expected
 :
 FAIL
+[
+can
+overwrite
+with
+no
+value
+]
+expected
+:
+FAIL
+[
+can
+overwrite
+with
+no
+value
+(
+Computed
+Style
+)
+]
+expected
+:
+FAIL
+[
+can
+overwrite
+with
+no
+value
+(
+Cascading
+)
+]
+expected
+:
+FAIL