Add support of portal loop lookups when they are nested >1 level in s…

[siarheiy]

…hadow dom hierarchy. the idea:

1. Existing data attr. is used for backwards compatibility: [data-shadow-host-id] 2) When same shadow DOM contains more than 1 portal root - the value of this attr. contain all the IDs separated by comma. 3) When portal root is nested under the hierarchy of shadow roots - the ID of this portal is added to all relevant nodes in this hierarchy. They are properly cleaned up when the portal root is destroyed.

Description:

Issue link:

QA notes:

[github-actions]

Generated by: track-bundle-size
Generated at: Thu, 11 Jun 2026 13:36:07 GMT
Bundle size diff (in kBytes). Not gzipped. Both CSS & JS included.
Baseline: v6.3.1 (2025-12-03)
CI Status: ok

Module	Baseline Size (v6.3.1)	Size	Diff	Within Threshold	Threshold (min - max)
templateApp	693.09	705.55	+12.47 js:+5.29 css:+7.18	🆗	623.78 - 762.39
@epam/app	5586.96	5537.34	-49.61 js:-55.25 css:+5.64	🆗	5028.26 - 6145.65
@epam/electric	5.04	5.04	0 js:0 css:0	🆗	4.53 - 5.54
@epam/promo	55.61	55.57	-0.05 js:0 css:-0.05	🆗	50.05 - 61.17
@epam/uui-extra	0.21	0.21	0 js:0 css:0	🆗	0.19 - 0.23
@epam/loveship	92.81	96.25	+3.44 js:+3.48 css:-0.04	🆗	83.53 - 102.09
@epam/uui-components	257.49	263.04	+5.54 js:+4.03 css:+1.51	🆗	231.75 - 283.25
@epam/uui-core	324.75	330.13	+5.38 js:+5.38 css:0	🆗	292.27 - 357.23
@epam/uui-db	41.63	41.72	+0.08 js:+0.08 css:0	🆗	37.47 - 45.8
@epam/uui-docs	181.03	194.75	+13.72 js:+13.72 css:+0.01	🆗	162.92 - 199.13
@epam/uui-editor	174.1	173.26	-0.84 js:-0.83 css:-0.01	🆗	156.69 - 191.51
@epam/uui-timeline	75.5	75.49	-0.01 js:0 css:0	🆗	67.95 - 83.05
@epam/uui	527.51	561.06	+33.55 js:+10.74 css:+22.81	🆗	474.76 - 580.26

new sizes (raw)

To set the sizes as a new baseline, you can copy/paste next content to the uui-build/config/bundleSizeBaseLine.json and commit the file.

{
  "version": "6.5.0",
  "timestamp": "2026-06-11",
  "sizes": {
    "templateApp": {
      "css": 264820,
      "js": 457665
    },
    "@epam/app": {
      "css": 726287,
      "js": 4943952
    },
    "@epam/electric": {
      "css": 2275,
      "js": 2883
    },
    "@epam/promo": {
      "css": 47756,
      "js": 9145
    },
    "@epam/uui-extra": {
      "css": 0,
      "js": 213
    },
    "@epam/loveship": {
      "css": 55336,
      "js": 43226
    },
    "@epam/uui-components": {
      "css": 25145,
      "js": 244200
    },
    "@epam/uui-core": {
      "css": 0,
      "js": 338056
    },
    "@epam/uui-db": {
      "css": 0,
      "js": 42718
    },
    "@epam/uui-docs": {
      "css": 2162,
      "js": 197259
    },
    "@epam/uui-editor": {
      "css": 12944,
      "js": 164475
    },
    "@epam/uui-timeline": {
      "css": 2199,
      "js": 75104
    },
    "@epam/uui": {
      "css": 222096,
      "js": 352428
    }
  }
}

---

Generated by: generate-components-api
CI Status: ok

Total amount of exported types/props without JSDoc comments

	Amount
Types	341 (+0) 🆗
Props	220 (+0) 🆗