Merge branch 'develop' into 6637-add-new-participant-types-to-sequence-diagrams

.changeset/beige-peas-shave.md

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+---
+'@mermaid-js/mermaid-zenuml': patch
+---
+
+Fixed a critical bug that the ZenUML diagram is not rendered.

.changeset/large-mirrors-cheer.md

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+---
+'mermaid': patch
+---
+
+fix: Update casing of ID in requirement diagram

.changeset/lovely-queens-own.md

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+---
+'mermaid': patch
+---
+
+fix(block): overflowing blocks no longer affect later lines
+
+This may change the layout of block diagrams that have overflowing lines
+(i.e. block diagrams that use up more columns that the `columns` specifier).

.changeset/smart-humans-cover.md

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+---
+'mermaid': patch
+---
+
+fix: Update flowchart direction TD's behavior to be the same as TB