Add CSS position-area: {span-left,span-right} (mdn#27999)

Add CSS position-area: span-left and span-right

Author: Elchi3

css/properties/position-area.json

@@ -862,6 +862,76 @@
             }
           }
         },
+        "span-left": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-anchor-position/#valdef-position-area-span-left",
+            "tags": [
+              "web-features:anchor-positioning"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": "129"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false,
+                "impl_url": "https://bugzil.la/1838746"
+              },
+              "firefox_android": "mirror",
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "26"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "span-right": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-anchor-position/#valdef-position-area-span-right",
+            "tags": [
+              "web-features:anchor-positioning"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": "129"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false,
+                "impl_url": "https://bugzil.la/1838746"
+              },
+              "firefox_android": "mirror",
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "26"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
         "span-self-block-end": {
           "__compat": {
             "spec_url": "https://drafts.csswg.org/css-anchor-position/#valdef-position-area-span-self-block-end",