fix(markdown): fix single-formatted headings & list items (#1820)

* fix(markdown): fix formatting & inline edge cases (show behavior before change)

Signed-off-by: Panos Vagenas <pva@zurich.ibm.com>

* add change and updated test data

Signed-off-by: Panos Vagenas <pva@zurich.ibm.com>

* update lock

Signed-off-by: Panos Vagenas <pva@zurich.ibm.com>

* improve test case

Signed-off-by: Panos Vagenas <pva@zurich.ibm.com>

---------

Signed-off-by: Panos Vagenas <pva@zurich.ibm.com>

tests/data/groundtruth/docling_v2/lorem_ipsum.docx.json

@@ -1,6 +1,6 @@
 {
   "schema_name": "DoclingDocument",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "name": "lorem_ipsum",
   "origin": {
     "mimetype": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
@@ -66,7 +66,8 @@
         "bold": false,
         "italic": false,
         "underline": false,
-        "strikethrough": false
+        "strikethrough": false,
+        "script": "baseline"
       }
     },
     {
@@ -96,7 +97,8 @@
         "bold": false,
         "italic": false,
         "underline": false,
-        "strikethrough": false
+        "strikethrough": false,
+        "script": "baseline"
       }
     },
     {
@@ -126,7 +128,8 @@
         "bold": false,
         "italic": false,
         "underline": false,
-        "strikethrough": false
+        "strikethrough": false,
+        "script": "baseline"
       }
     },
     {
@@ -156,7 +159,8 @@
         "bold": false,
         "italic": false,
         "underline": false,
-        "strikethrough": false
+        "strikethrough": false,
+        "script": "baseline"
       }
     },
     {
@@ -186,7 +190,8 @@
         "bold": false,
         "italic": false,
         "underline": false,
-        "strikethrough": false
+        "strikethrough": false,
+        "script": "baseline"
       }
     }
   ],