relationshipLine class in Entity Relationship diagrams doesn't accept styles

[khs26]

Description

When attempting to apply themeCSS to the .er.relationshipLine element, nothing seems to change (in particular, the generated SVG has stroke: gray regardless).

Even applying config to all elements in .er doesn't affect the relationship lines.

Steps to reproduce

Illustrated by this example which applies CSS styling to everything in the ER diagram.

Screenshots

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Code Sample

Shared above

Setup

• Mermaid version: unsure - issue is present both in VSCode Mermaid preview plugin and Live viewer
• Browser and Version: Safari v17.6

Suggested Solutions

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Additional Context

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