test: re-baseline canonical_govid literals to 12-char namespace

Swaps every hardcoded 9-char canonical_govid literal (Broward County,
Fort Lauderdale City, Florida/Alabama state govts, Bexar/Tarrant/Wayne
counties, San Diego/Oakland/Miami/Austin cities) for its 12-char Phase P
equivalent, resolved by name+type+state against the regenerated fixture
xwalk. Also updates two gov_name search patterns that no longer match
under Phase P canonical naming ("FLORIDA STATE GOVT" -> "FLORIDA"; the
"Miami" substring test now pins type = "city" since MIAMI-DADE COUNTY's
canonical name now also contains "Miami", which would otherwise make the
match ambiguous across govs_types instead of resolving via largest-pop).
Underlying per-year population figures for Broward County and Alabama
are unchanged, so no expected data-value literals needed recomputation.
Suite: 126 test blocks / 336 expectations, 0 FAIL / 0 WARN / 0 SKIP.

tests/testthat/test-mirror.R

@@ -61,7 +61,7 @@ test_that("cog_mirror reads back via a fresh session against the mirror", {
   cog_close()
   options(uscogdata.url = paste0(normalizePath(tmp), "/"))
 
-  r <- cog_spending("101006006", 2020L, "Corrections")
+  r <- cog_spending("121011212191", 2020L, "Corrections")
   expect_gt(nrow(r), 0L)
-  expect_equal(unique(r$canonical_govid), "101006006")
+  expect_equal(unique(r$canonical_govid), "121011212191")
 })