feat(module:popover,popconfirm,tooltip): overlayClassName supports space delimited classes

[Laffery]

…ace delimited classes string

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Application (the showcase website) / infrastructure changes
• Other... Please describe:

What is the current behavior?

Issue Number: close #8952

overlayClassName only supports a single class

// works
nzPopoverOverlayClassName="testClass"

// doesn't work
nzPopoverOverlayClassName="testClass1 testClass2"

What is the new behavior?

nzPopconfirmOverlayClassName nzTooltipPopoverOverlayClassName nzPopoverOverlayClassName support space delimited classes

// works
nzPopoverOverlayClassName="testClass"

// works too
nzPopoverOverlayClassName="testClass1 testClass2"

Does this PR introduce a breaking change?

• Yes
• No

Other information

[zorro-bot]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.91%. Comparing base (f1d8d92) to head (960f714).
Report is 3 commits behind head on master.

Additional details and impacted files

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##           master    #8972   +/-   ##
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  Coverage   91.91%   91.91%           
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  Files         555      555           
  Lines       19708    19713    +5     
  Branches     2944     2945    +1     
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+ Hits        18114    18119    +5     
  Misses       1267     1267           
  Partials      327      327           

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[HyperLife1119]

LGTM

[behdi]

Hey friends, when are you going to release this? We're kind of blocked because of this.

@HyperLife1119 @simplejason

[lppedd]

@behdi you can see an estimate date in the milestone to which the issue is assigned to.

[behdi]

@lppedd But that's for a minor release, isn't it?
This particular PR looks more like something you can put into a patch, esp. given that the current version of ng-zorro-antd has broken behavior for overlayCkassName; something that used to work in v18, is no longer working on v19, which sounds like a patch to me tbh,

[HyperLife1119]

cc @Laffery

[nicolaric-akenza]

i'm also very much dependent on it. our angular 19 upgrade is blocked by this. would be great if this could be released asap.