fix(book): pin webpack to 5.98.0 to fix Docusaurus build

[fakedev9999]

Summary

• webpack 5.99+ removed ProgressPlugin options (name, color, reporters, reporter) that Docusaurus 3.7.0 depends on, breaking the book CI build
• Adds yarn.lock with a resolutions entry pinning webpack to 5.98.0
• Removes the stale package-lock.json since CI already uses yarn install --frozen-lockfile

Test plan

• Verified yarn build succeeds locally with the pinned webpack version
• CI book workflow should pass on this PR

[github-actions]

Block 20600000	Base Branch	Current PR	Diff	Diff (%)
Total Cycle Count	279,670,077	279,668,609	-1,468	-0.00
Inputs deserialization	73,801,611	73,801,675	64	0.00
Initialize Witness DB	58,747,929	58,747,929	0	-0.00
Recover Senders	7,671,164	7,671,164	0	-0.00
Header Validation	1,233,010	1,233,010	0	-0.00
Block Execution	88,582,538	88,581,909	-629	-0.00
Block Validation	3,028,753	3,028,753	0	-0.00
State Root Computation	28,573,592	28,573,629	37	0.00
Syscall Count	209,273	209,273	0	-0.00
Prover Gas	351,933,353	351,932,745	-608	-0.00