doc: update known issues for NCS v2.5.0

Added v2.5.0 tag to known issues.

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- [ ] Asset Tracker v2 done by @simensrostad
- [ ] Serial LTE Modem issue checked by @MarkusLassila
- [ ]  LTE Sensor Gateway issue checked by @lemrey (NCSDK-20026)
- [ ] Low Power UART sample issue on nRF5340 DK
      by @nordic-krch and @anangl
- [ ] Thingy:53 issue checked by @MarekPieta
- [ ] Thread issues checked by @bpienk
- [ ] Zigbee issues checked by @sebastiandraus
- [ ] Matter issues checked by @kkasperczyk-no
- [ ] HomeKit issues checked by @annwoj and @mariuszpos
- [ ] nRF Desktop, CAF, nRF Machine Learning checked by @MarekPieta
- [ ] nRF Audio (including Controller) checked
      by @rick1082 and @alexsven
- [ ] CAF issues checked by @MarekPieta
- [ ] NCS modem libraries and Networking libraries issues
      checked by @simensrostad
- [ ] Sidewalk issues checked by @annwoj
- [ ] BLE issue checked by @grochu
- [ ] BT Mesh issue checked by @Balaklaka
- [ ] Build system issue checked by @osaether
- [ ] DFU and FOTA issues checked by @osaether
- [ ] NFC issues checked by @grochu
- [ ] SPM issues checked by @osaether
- [ ] Crypto issues checked by @frkv and @joerchan
- [ ] MPSL issues checked by @laxiLang
- [ ] Radio driver issues checked by @ankuns
- [ ] SD Controller issues checked by @laxiLang
- [ ] TF-M done by @SebastianBoe
- [ ] Radio test sample issue checked by @KAGA164 and @grochu
- [ ] nRFxlib Modem library issues checked by @lemrey
- [ ] Zephyr issues checked by @de-nordic
- [ ] Zephyr LwM2M issues checked by @SeppoTakalo

Signed-off-by: divya pillai <[email protected]>

doc: doc review

doc review

Signed-off-by: divya pillai <[email protected]>

doc: doc review

doc review

Signed-off-by: divya pillai <[email protected]>