VS: Fix `/MANIFESTUAC:` link flag mapping for v143

Apply the changes from commit d2fcc674 (VS: Fix `/MANIFESTUAC:NO` link
flag mapping for v142, 2019-01-24, v3.14.0-rc1~74^2~4) and commit
fd45cbf4 (VS: Fix `/MANIFESTUAC:` link flag mapping for v142,
2019-01-24, v3.14.0-rc1~74^2~1) to the v143 flag table.

Templates/MSBuild/FlagTables/v143_Link.json

@@ -650,26 +650,15 @@
     "value": "true",
     "flags": []
   },
-  {
-    "name": "EnableUAC",
-    "switch": "MANIFESTUAC:NO",
-    "comment": "Enable User Account Control (UAC)",
-    "value": "false",
-    "flags": [
-      "UserValue",
-      "UserIgnored",
-      "Continue"
-    ]
-  },
   {
     "name": "EnableUAC",
     "switch": "MANIFESTUAC:",
-    "comment": "Enable User Account Control (UAC)",
-    "value": "true",
+    "comment": "",
+    "value": "",
     "flags": [
       "UserValue",
-      "UserIgnored",
-      "Continue"
+      "UserRequired",
+      "SpaceAppendable"
     ]
   },
   {
@@ -682,16 +671,6 @@
       "UserRequired"
     ]
   },
-  {
-    "name": "UACUIAccess",
-    "switch": "MANIFESTUAC:",
-    "comment": "UAC Bypass UI Protection",
-    "value": "true",
-    "flags": [
-      "UserValue",
-      "UserRequired"
-    ]
-  },
   {
     "name": "UACUIAccess",
     "switch": "uiAccess='false'",