fix: [Burger] set burger content area to be scrollable

[cpoftea]

Description:

Just added overflow to burger content area

Issue link:

#2977, case 1

[github-actions]

Generated by: track-bundle-size
Generated at: Thu, 29 Jan 2026 08:16:40 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	693.43	+0.34 js:-0.03 css:+0.37	🆗	623.78 - 762.39
@epam/app	5586.96	5534.42	-52.53 js:-51.56 css:-0.97	🆗	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	96.27	+3.45 js:+3.49 css:-0.04	🆗	83.53 - 102.09
@epam/uui-components	257.49	259.11	+1.61 js:+0.59 css:+1.02	🆗	231.75 - 283.25
@epam/uui-core	324.75	327.46	+2.71 js:+2.71 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	194.76	+13.75 js:+13.75 css:0	🆗	162.92 - 199.13
@epam/uui-editor	174.1	174.09	-0.01 js:+0 css:-0.01	🆗	156.69 - 191.51
@epam/uui-timeline	75.5	75.49	-0.01 js:-0.01 css:0	🆗	67.95 - 83.05
@epam/uui	527.51	544.31	+16.8 js:+1.13 css:+15.67	🆗	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": "6.4.0",
  "timestamp": "2026-01-29",
  "sizes": {
    "templateApp": {
      "css": 257854,
      "js": 452215
    },
    "@epam/app": {
      "css": 719517,
      "js": 4947736
    },
    "@epam/electric": {
      "css": 2275,
      "js": 2883
    },
    "@epam/promo": {
      "css": 47756,
      "js": 9145
    },
    "@epam/uui-extra": {
      "css": 0,
      "js": 213
    },
    "@epam/loveship": {
      "css": 55343,
      "js": 43231
    },
    "@epam/uui-components": {
      "css": 24643,
      "js": 240683
    },
    "@epam/uui-core": {
      "css": 0,
      "js": 335318
    },
    "@epam/uui-db": {
      "css": 0,
      "js": 42718
    },
    "@epam/uui-docs": {
      "css": 2155,
      "js": 197288
    },
    "@epam/uui-editor": {
      "css": 12942,
      "js": 165328
    },
    "@epam/uui-timeline": {
      "css": 2197,
      "js": 75103
    },
    "@epam/uui": {
      "css": 214783,
      "js": 342589
    }
  }
}

---

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

Total amount of exported types/props without JSDoc comments

	Amount
Types	335 (+0) 🆗
Props	220 (+0) 🆗