LibWeb: Let LineBuilder decide on Y-coordinate for float insertion

Instead of reaching into the IFC of the LineBuilder from the BFC, we
should let LineBuilder determine how to deal with the running vertical
float clearance. No functional changes.

Libraries/LibWeb/Layout/BlockFormattingContext.cpp

@@ -1051,7 +1051,7 @@ void BlockFormattingContext::layout_floating_box(Box const& box, BlockContainer
     // First we place the box normally (to get the right y coordinate.)
     // If we have a LineBuilder, we're in the middle of inline layout, otherwise this is block layout.
     if (line_builder) {
-        auto y = max(line_builder->y_for_float_to_be_inserted_here(box), line_builder->inline_formatting_context().vertical_float_clearance());
+        auto y = line_builder->y_for_float_to_be_inserted_here(box);
         box_state.set_content_y(y + box_state.margin_box_top());
     } else {
         place_block_level_element_in_normal_flow_vertically(box, y + box_state.margin_top);

Libraries/LibWeb/Layout/LineBuilder.cpp

@@ -162,7 +162,7 @@ CSSPixels LineBuilder::y_for_float_to_be_inserted_here(Box const& box)
         candidate_block_offset = highest_intersection_bottom.value();
     }
 
-    return candidate_block_offset;
+    return max(candidate_block_offset, m_context.vertical_float_clearance());
 }
 
 bool LineBuilder::should_break(CSSPixels next_item_width)

Libraries/LibWeb/Layout/LineBuilder.h

@@ -46,8 +46,6 @@ public:
     void recalculate_available_space();
     CSSPixels y_for_float_to_be_inserted_here(Box const&);
 
-    auto& inline_formatting_context() { return m_context; }
-
     void did_introduce_clearance(CSSPixels);
 
 private: