fix(math,mermaid): declare @react-pdf/primitives dependency (#3464)

Both packages import @react-pdf/primitives at runtime but never declared
it, so it only resolved via hoisting. Strict package layouts fail to
resolve the bare import.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: diegomura

.changeset/declare-primitives-dependency.md

@@ -0,0 +1,6 @@
+---
+'@react-pdf/mermaid': patch
+'@react-pdf/math': patch
+---
+
+Declare `@react-pdf/primitives` dependency.

packages/math/package.json

@@ -23,6 +23,7 @@
     "lib"
   ],
   "dependencies": {
+    "@react-pdf/primitives": "^4.3.0",
     "@react-pdf/svg": "^1.1.0",
     "mathjax-full": "^3.2.2"
   },

packages/mermaid/package.json

@@ -23,6 +23,7 @@
     "lib"
   ],
   "dependencies": {
+    "@react-pdf/primitives": "^4.3.0",
     "@react-pdf/svg": "^1.1.0",
     "beautiful-mermaid": "^1.1.3"
   },