chore(dev): Fix inconsistencies in package.json scripts

[lobsterkatie]

This fixes a few places where various packages' package.json scripts differed from the standard pattern:

• build:dev should always run in parallel (fixed in integrations, serverless, tracing, vue, and wasm)
• build:dev:watch should never build bundles (fixed in tracing)
• build:watch should always build bundles (fixed in vue and wasm)
• build:bundle:watch should exist if build:bundle exists (fixed in wasm; this is not true of integrations, but bundle building there is handled by a script, so it's more complicated and probably not worth it until/if we ever need it)

[github-actions]

size-limit report

Path	Base Size (1852e6b)	Current Size	Change
@sentry/browser - ES5 CDN Bundle (gzipped + minified)	19.66 KB	19.58 KB	-0.4% 🔽
@sentry/browser - ES5 CDN Bundle (minified)	62.83 KB	62.46 KB	-0.59% 🔽
@sentry/browser - ES6 CDN Bundle (gzipped + minified)	18.24 KB	18.19 KB	-0.29% 🔽
@sentry/browser - ES6 CDN Bundle (minified)	56.15 KB	55.96 KB	-0.34% 🔽
@sentry/browser - Webpack (gzipped + minified)	22.78 KB	22.72 KB	-0.24% 🔽
@sentry/browser - Webpack (minified)	80.16 KB	80.38 KB	+0.28% 🔺
@sentry/react - Webpack (gzipped + minified)	22.81 KB	22.76 KB	-0.24% 🔽
@sentry/nextjs Client - Webpack (gzipped + minified)	47.78 KB	47.69 KB	-0.18% 🔽
@sentry/browser + @sentry/tracing - ES5 CDN Bundle (gzipped + minified)	25.53 KB	25.46 KB	-0.3% 🔽
@sentry/browser + @sentry/tracing - ES6 CDN Bundle (gzipped + minified)	23.85 KB	23.81 KB	-0.19% 🔽