Preserve search params when navigating within the viewer

[eyeseast]

Closes #933

Example URL: https://deploy-preview-985.muckcloud.com/documents/20006908-lawsuit-document-dkt-1-68-ex-j/?q=apple&mode=search&embed=1&title=0

Clicking links in search or the mode tabs should keep you in the embed viewer and preserve params like title=0.

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[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	31.8%	7674 / 24127
🔵	Statements	31.8%	7674 / 24127
🔵	Functions	47.74%	339 / 710
🔵	Branches	75.71%	1113 / 1470

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
src/lib/components/common/Tab.svelte	100%	66.66%	100%	100%
src/lib/components/viewer/ReadingToolbar.svelte	0%	0%	0%	0%	1-163
src/lib/components/viewer/Search.svelte	0%	0%	0%	0%	1-90
src/lib/utils/navigation.ts	100%	66.66%	100%	100%
src/lib/utils/tests/navigation.test.ts	100%	100%	100%	100%

Generated in workflow #525 for commit 3411694 by the Vitest Coverage Report Action

[allanlasser]

Looks great. Love the new util.