updateListPreferences

import { updateListPreferences } from "lightning/uiListsApi";
import ACCOUNT_OBJECT from "@salesforce/schema/Account";

export default class UpdateListPrefExample extends LightningElement {

  updateListPreferences({
    objectApiName: ACCOUNT_OBJECT,
    listViewApiName: "AllAccounts",
  });
}

PATCH /ui-api/list-preferences/${objectApiName}/${listViewApiName}

<!-- wireUpdateListPreferences.html -->
<template>
   <lightning-card title="wireUpdateListPreferences">
       <lightning-button variant="brand" label="Update List View Preferences" title="Primary action" onclick={updateListViewPrefs} class="slds-m-left_x-small"></lightning-button>
       <template lwc:if={columnWidths}>
           <div class="slds-m-around_medium">
               <template for:each={columnWidths} for:item="col">
                   <li key={col}>{col}</li>
               </template>
           </div>
       </template>
   </lightning-card>
</template>

// wireUpdateListPreferences.js
import { updateListPreferences } from "lightning/uiListsApi";
import { LightningElement, api } from "lwc";
import ACCOUNT_OBJECT from "@salesforce/schema/Account";
export default class UpdateListPrefs extends LightningElement {
  error;
  columnWidths;
  @api async updateListViewPrefs() {
    updateListPreferences({
      objectApiName: ACCOUNT_OBJECT.objectApiName,
      listViewApiName: "AllAccounts",
      columnWidths: {
        Type: 200,
        "Owner.Alias": 200,
        Phone: 200,
        BillingState: 250,
        Name: 250,
      },
    })
      .then((result) => {
        this.columnWidths = Object.entries(result.data.columnWidths);
      })
      .catch((error) => {
        this.error = error;
      });
  }
}