Optimization of connection between nodes

### What problem are you experiencing?

The connection lines of the nodes are blocked.

### When does this problem occur?

When connecting the nodes, the end point (input port) is to the left of the starting point (output port).

### How often do you encounter this problem?

Multiple times per day

### How much does this problem affect your workflow?

Minor annoyance

### Current workarounds

_No response_

### Ideas for solutions (Optional)

### Additional context

_No response_

No file or test is named. Reproduce the issue in the node editor by connecting nodes when the input port is left of the output port, then trace the connection-line rendering path; done means the line remains visible and unobstructed in that layout.

Written by the indexing model from the issue text.