'Milestone' markers of Mermaid gantt chart placed incorrectly

[mushix64]

• Searched existing issues to avoid creating duplicates.
• Confirmed that it can be reproduced in built-in themes without customized css.
• Searched http://support.typora.io/

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Describe the bug

• In Mermaid gantt chart, milestone markers are rendered out of alignment with their actual position.
  • Looks like a similar case to issue Mermaid Gantt Chart Rendering bad #5092 and Upgrade Diagram version / Diagram upstream bugs #1661(Closed), but as far as testing with a similar markdown, the markers are in different positions.
• Only the marker displayed on the screen is incorrect. Markers in the output file correctly placed in all formats.
  • Compared to the correct placement in the output file, the text is positioned correctly, only the markers are misaligned.
• Misalignment is not only left to right, but also up and down.
  • As the number of milestone markers increases, they will overhang the lower section.

To Reproduce

1. create a Gantt chart
2. place milestones with desired dates and durations

• place multiple milestones
• also create another section and chart below the milestone section

4. the milestones are displayed out of alignment.
5. output the displayed chart to a file and compare it with the screen display.

Expected behavior
Milestone markers on screen are placed correctly, as the below reference (https://mermaid.js.org/syntax/gantt.html - milestone section)

As you may notice, the exact location of the milestone is determined by the initial date for the milestone and the "duration" of the task this way: initial date+duration/2.

Screenshots / Screencasts

• Output file (correct placement)
  

• On screen (wrong placement)

Sample Markdown File
(same as issue #5092 )

```mermaid
gantt
dateFormat  YYYY-MM-DD
title All items changes to protect the innocent
excludes weekends

section Deliveries
Receive Cables            : milestone, cables, 2022-03-01, 1h
Receive Things x11    : milestone, recvx11, 2022-03-07, 1d
Receive Things x12    : milestone, recvx12, 2022-03-14, 1d
Receive Things x13    : milestone, recvx13, 2022-03-21, 1d

section Setup Connection
Connect A to B  : ab, after cables, 1d
Connect A to C  : ac, after cables ab, 1d

section Setup C
Move things         : mvwn, 2022-03-01, 1d
Install Recipe : recipe, after mvwn, 5d

section Connection
Connect x11 to C : x11, after recvx11, 1d
Connect x12 to C : x12, after recvx12, 1d
Connect x13 to C : x13, after recvx13, 1d

Run something                       : sth, after x13, 10d

Desktop (please complete the following information):

• macOS Ventura 13.3.1

Typora Version

• 1.15.13 (6766)

[abnerlee]

Seems fixed in v1.6 already