### Steps to reproduce

1. Login as a user with meetings permissions who is in CET Begin of the insertion(Europe/Berlin)End of the insertion

2. Go to the meetings module

3. Go to any existing meeting series Begin of the insertioncreated by a user in CET (Europe/Amsterdam)End of the insertion

4. Open any meeting series details


### What is the buggy behaviour?

* Warning about timezone is shown, mentioning the own timezone Begin of the insertionabbreviationEnd of the insertion (CET)


### What is the expected behaviour?

1. No meeting timezone warning Begin of the insertionwhen the abbreviations are the same, even if the underlying timezones are different (UTC +1 can be set via many different options)End of the insertion


### Screenshots and other files

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/918759/content">

### Environment information

**OpenProject version**

Core build

[1b3d104516da9c3cea840e4e3407f6ab8a85eeef](https://qa.openproject-stage.com/external_redirect?url=https%3A%2F%2Fgithub.com%2Fopf%2Fopenproject%2Fcommits%2F1b3d104516da9c3cea840e4e3407f6ab8a85eeef)

Product version

[27e147555efcba1703d2db20bc42e71ed9200f02](https://qa.openproject-stage.com/external_redirect?url=https%3A%2F%2Fgithub.com%2Fopf%2Fsaas-openproject%2Fcommits%2F27e147555efcba1703d2db20bc42e71ed9200f02)

Core version

OpenProject 17.1.0

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* [x] Windows
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