Format to name of day, week, month: "Cannot read properties of undefined"

Describe the bug
Formatting datetime with name of week, name of month, etc. throws an error.

dayjs().format('ddd')

TypeError: Cannot read properties of undefined (reading '4')
    at h (/Users/suah/Projects/Javascripts/tcl/node_modules/.pnpm/dayjs@1.11.10/node_modules/dayjs/dayjs.min.js:1:5023)
    at /Users/suah/Projects/Javascripts/tcl/node_modules/.pnpm/dayjs@1.11.10/node_modules/dayjs/dayjs.min.js:1:5544
    at /Users/suah/Projects/Javascripts/tcl/node_modules/.pnpm/dayjs@1.11.10/node_modules/dayjs/dayjs.min.js:1:5920
    at String.replace (<anonymous>)
    at M.m.format (/Users/suah/Projects/Javascripts/tcl/node_modules/.pnpm/dayjs@1.11.10/node_modules/dayjs/dayjs.min.js:1:5160)
    at M.u.format (/Users/suah/Projects/Javascripts/tcl/node_modules/.pnpm/dayjs@1.11.10/node_modules/dayjs/plugin/utc.js:1:1655)
    at /Users/suah/Projects/Javascripts/tcl/packages/common/tests/date/comparator.test.ts:27:25
    at file:///Users/suah/Projects/Javascripts/tcl/node_modules/.pnpm/@vitest+runner@0.34.6/node_modules/@vitest/runner/dist/index.js:135:14
    at file:///Users/suah/Projects/Javascripts/tcl/node_modules/.pnpm/@vitest+runner@0.34.6/node_modules/@vitest/runner/dist/index.js:58:26
    at runTest (file:///Users/suah/Projects/Javascripts/tcl/node_modules/.pnpm/@vitest+runner@0.34.6/node_modules/@vitest/runner/dist/index.js:663:17)

Expected behavior
Should return a string with the name of the week.

Information

• Day.js Version 1.11.10
• OS: Mac 13.4.1

Reproduce the failure from packages/common/tests/date/comparator.test.ts with Day.js 1.11.10 and the utc plugin. Trace formatting for the ddd token through the UTC and format paths, then confirm the fix by verifying that weekday and related name-based tokens return strings instead of throwing.