feat: leverage new list modeling, capture default markers (#1856)

* chore: update docling-core & regenerate test data

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

* update backends to leverage new list modeling

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

* repin docling-core

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

* ensure availability of latest docling-core API

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

---------

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

tests/data/groundtruth/docling_v2/inline_and_formatting.md.yaml

@@ -56,7 +56,7 @@ groups:
   - $ref: '#/texts/27'
   - $ref: '#/texts/28'
   content_layer: body
-  label: ordered_list
+  label: list
   name: list
   parent:
     $ref: '#/body'
@@ -430,7 +430,7 @@ texts:
   content_layer: body
   enumerated: true
   label: list_item
-  marker: '-'
+  marker: ''
   orig: ''
   parent:
     $ref: '#/groups/2'
@@ -476,7 +476,7 @@ texts:
   content_layer: body
   enumerated: true
   label: list_item
-  marker: '-'
+  marker: ''
   orig: ''
   parent:
     $ref: '#/groups/2'
@@ -519,7 +519,7 @@ texts:
   content_layer: body
   enumerated: true
   label: list_item
-  marker: '-'
+  marker: ''
   orig: ''
   parent:
     $ref: '#/groups/2'
@@ -562,7 +562,7 @@ texts:
   content_layer: body
   enumerated: true
   label: list_item
-  marker: '-'
+  marker: ''
   orig: ''
   parent:
     $ref: '#/groups/2'
@@ -604,7 +604,7 @@ texts:
   content_layer: body
   enumerated: true
   label: list_item
-  marker: '-'
+  marker: ''
   orig: Open a Pull Request
   parent:
     $ref: '#/groups/2'
@@ -621,7 +621,7 @@ texts:
     strikethrough: false
     underline: false
   label: list_item
-  marker: '-'
+  marker: ''
   orig: Whole list item has same formatting
   parent:
     $ref: '#/groups/2'
@@ -633,7 +633,7 @@ texts:
   content_layer: body
   enumerated: true
   label: list_item
-  marker: '-'
+  marker: ''
   orig: ''
   parent:
     $ref: '#/groups/2'
@@ -693,7 +693,7 @@ texts:
   content_layer: body
   enumerated: false
   label: list_item
-  marker: '-'
+  marker: ''
   orig: ''
   parent:
     $ref: '#/groups/8'
@@ -729,7 +729,7 @@ texts:
   content_layer: body
   enumerated: false
   label: list_item
-  marker: '-'
+  marker: ''
   orig: ''
   parent:
     $ref: '#/groups/8'
@@ -878,4 +878,4 @@ texts:
   prov: []
   self_ref: '#/texts/48'
   text: Table Heading
-version: 1.4.0
+version: 1.5.0