perf: lower priority of NormedAlgebraicFoo -> AlgebraicFoo instances

[grunweg]

We never unbundled the normed and algebra hierarchies, and this is causing performance problems in #36299 and friends. Try if lowering the respective instance priorities helps.

---

[grunweg]

!bench

[leanprover-radar]

Waiting until the label awaiting-CI This PR does not pass CI yet. This label is automatically removed once it does. is removed.

_{You can edit the original message until the command succeeds.}

[github-actions]

PR summary 09af23f880

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

---

Declarations diff

No declarations were harmed in the making of this PR! 🐙

You can run this locally as follows

## summary with just the declaration names:
./scripts/pr_summary/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/pr_summary/declarations_diff.sh long <optional_commit>

The doc-module for scripts/pr_summary/declarations_diff.sh contains some details about this script.

---

No changes to technical debt.

You can run this locally as

./scripts/reporting/technical-debt-metrics.sh pr_summary

• The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
• The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).

[grunweg]

Closing; I don't capacity right now to investigate this. The underlying slow-down for metric connections has been fixed.