RFR: JDK-8305644: IGV: Node text not updated when switching from/to CFG view [v2]

[Tobias Holenstein]

> When switching the layouting mode to or from CFG the node text is not updated.
> 
> - Switching to `CFG view` gave the wrong node text: 
> <img width="487" alt="fail_to" src="https://user-images.githubusercontent.com/71546117/230041157-9f6613ef-112c-44d6-8263-63f33c9e56e3.png">
> - with this fix it looks like this
> <img width="514" alt="fix_to" src="https://user-images.githubusercontent.com/71546117/230041139-09f10865-958c-415c-96fe-b036cc2c061a.png">
> 
> - Switching from `CFG view` gave the wrong node text: 
> <img width="682" alt="fail_from" src="https://user-images.githubusercontent.com/71546117/230041151-7c56e33e-7fd2-46cb-b73d-70a7d194f666.png">
> - with this fix it looks like this
> <img width="599" alt="fix-from" src="https://user-images.githubusercontent.com/71546117/230041147-734d1fd0-507b-462e-a4d2-d8b039f333dc.png">

Tobias Holenstein has updated the pull request incrementally with one additional commit since the last revision:

  fix the bug properly

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/13348/files
  - new: https://git.openjdk.org/jdk/pull/13348/files/06756d71..8b69ac9b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13348&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13348&range=00-01

  Stats: 2 lines in 1 file changed: 1 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/13348.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13348/head:pull/13348

PR: https://git.openjdk.org/jdk/pull/13348